June & Juno, Queen of Goddesses

Black and white engraving for June from Kalendar of Shepherds.
Kalendar of Shepherds. Title page for June

June is, probably, named after Juno, the leading lady of Olympus, sister and brother to the Great God Jupiter (Jove). In Welsh, it’s ‘Mehefin’ – Midsummer. In Gaelic, ‘An t’Og mhios’ – the Young Month. In Anglo-Saxon, ‘Litha’, the month of the Midsummer Moon.

The picture above is from the Kalendar of Shepherds, with its 15th Century French Illustration. It shows shearing as the main occupation for the month but set within a flowery summer scene. In the roundels are the Gemini twins and the Cancer Crab, the star signs of June.

The text of the Kalendar of Shepherds gives a lyrical view of the joys of June:

From Kalendar of Shepherds, 17th Century Text Wellcome Library
From Kalendar of Shepherds, 17th Century Text Wellcome Library

June might come, not from Juno’s name, but from an Indo-European word for youth or vital energy. Ovid in Fasti, his poem about the Roman Year, lets Juno make her own case:

O poet, singer of the Roman year,
Who dares to tell great things in slender measures,
You’ve won the right to view a celestial power,
By choosing to celebrate the festivals in your verse.
But so you’re not ignorant or led astray by error.
June in fact takes its name from mine.
It’s something to have wed Jove, and to be Jove’s sister:
I’m not sure if I’m prouder of brother or husband.
If you consider lineage, I was first to call Saturn
Father, I was the first child fate granted to him.
Rome was once named Saturnia, after my father:
This was the first place he came to, exiled from heaven.
If the marriage bed counts at all, I’m called the
Thunderer’s Wife, and my shrine’s joined to that of Tarpeian Jove.
If his mistress could give her name to the month of May,
Shall a similar honour be begrudged to me?
Or why am I called queen and chief of goddesses?
Why did they place a golden sceptre in my hand?’

Translated by A. S. Kline © Copyright 2004 All Rights Reserved

In the previous Book (on May), Ovid told another story that June was named for young men.

‘So I deduce that the elders gave their own title
To the month of May: and looked after their own interests.
Numitor too may have said: ‘Romulus, grant this month
To the old men’ and his grandson may have yielded.
The following month, June, named for young men’
Gives no slight proof of the honour intended.’

The Latin for ‘Young men’ comes from the Latin iuvenis, “youth”)

But let’s not go into Indo-European roots, and let’s simply accept the most wonderful month is named after Juno, the Queen of Goddesses, the deity of marriage and women. Probably most famous for hating the Trojans – she had a grudge against Paris, as he ruled against her in that famous divine beauty competition. And more seriously, what other reaction can the Deity of Marriage, have to the man who showed such disregard for the sanctity of marriage that he ran away with the already spoken for Helen.

The Judgment of Paris 1700 by Daniel Purcell. Houghton Museum (Paris, Venus, Juno, Minerva)

‘A sweet season, the senses perfume and the spirits comfort.’

First Written in June 2023 and revised June 2024

There were some spelling and image errors in the email for my past (re)post so have a look at the revised page here, and spare my blushes.

St Pancras May 12th

St Pancras, Old Church (Photo: Kevin Flude)

Pancras means ‘all-powerful’ in Greek. St Pancras was a 14 year old who refused to give up his Christian Faith during the persecution of Christians by the Emperor Diocletian. He was beheaded on the Via Aurelia, traditionally, on 12 May 303 AD. His youth makes him the Patron Saint of children, but he is also the patron saint of jobs and health, and ‘invoked’ against cramps, false witnesses, headaches, and perjury. His body was buried in the Catacombs, but his head is kept in a reliquary in the Church of Saint Pancras in Rome, where he was buried.

Pope Gregory is said to have given St Augustine relics from St Pancras when his mission came to Kent in 597AD. They built a church dedicated to St Pancras, ruins of which can be found in the grounds of what is now St Augustine’s. Canterbury.

This story is partly responsible for the claims that St Pancras Old Church (pictured above) is a very old foundation. The idea being that there was a late Roman place of worship here. But there is very little solid evidence for this. It is also argued that, if it isn’t late Roman, then it dates to just after 604AD when St Mellitus, sent by St Augustine, established St Pauls Cathedral, and St Pancras Church. St Pancras’ Church was a Prebend of St Pauls Cathedral, but this is not evidence it was established as early as the Cathedral was. (a Prebend provides the stipend (pay) to support a Canon of a Cathedral).

When the Church was restored, the architects said it was mostly Tudor work with traces of Norman architecture. However, the suggested finding of a Roman tile or two, reused in the fabric, is used as evidence to keep the legend going.

If you read the Wikipedia page you will see evidence of two strands to the contributions, one trying to play down the legends of its early foundation, and, another trying to keep hold of its place as among the ‘earliest sites of Christian worship’.

Read the wikipedia page here: https://en.wikipedia.org/wiki/St_Pancras_Old_Church

It is a lovely Church, on an impressive site, with links to Thomas Hardy, and Sir John Soane whose tomb is the design inspiration for the iconic Red Telephone Box.

Floralia. Old Goats and an extraordinary Elephant April 28th

Flora on a gold aureus of 43–39 BC Wikipedia photot by АНО Международный нумизматический клуб

On the 28th of April until the Kalends (15th) of May the Romans, according to Ovid in the ‘Fasti’ Book IV, celebrated the Florialia dedicated to Flora, the Goddess of Spring, flowering, blossoming, budding, planting and fertility. She was one of the 15 Roman Deities offered a state-financed Priest. Her home in Rome, was on the lower slopes of the Aventine Hill near the Circus Maximus.

The Circus Maximus is the large long arena in the middle of Rome. Model Musee Arte et Histoire, Brussels, photo Kevin Flude

Celebrations began with theatrical performances, at the end of which the audience were pelted with beans and lupins. Then there were competitive games, and spectacles. The latter, in the reign of Galba, including a tight-rope walking – wait for it – elephant!

Incidently, Galba only survived for 7 months as Emperor – a little longer than Liz Truss’s 44 days but then she was not murdered by a rampaging mob at the end of her reign. It was the year known to history as the year of the 4 Emperors. (great description by Tacitus here:)

Juvenal records that prostitutes were included in the celebration of Flora by dancing naked, and fighting in mock gladiatorial battles. (there is a raging debate about the existence of female gladiators: a burial in Southwark has been said to be one such and Natalie Haynes has her say on the subject here🙂

Hares and goats were released as part of the ceremonies, presumably because they are very fertile and have a ‘salacious’ reputation! (Satyrs were, famously, obsessed with sex and were half man half goat. A man can still be referred to, normally behind his back, as an ‘old goat’).

Written in 2023 revised April 2024

Leap Day & and the Roman Calendar February 29th

Druids at All Hallows, by the Tower
Druids at All Hallows, by the Tower

I have just come back from my very first Leap Year Walk, which I gave tonight for London Walks. It was one of a series of my walks, which are about the year through London’s History. So far, I have done, a New Year Walk, an Imbolc Walk (1 February, St Brigid’s Day), a Spring Equinox Walk, a May Day Walk, a Summer Solstice Walk, an Autumn Equinox Walk, a Halloween Walk, and a Winter Solstice Walk. All, at their core, have the subject of the year, how it is arranged, and celebrated in different cultures and different times in London.

I hoped to get this post done, today, but on arrival at home my burglar alarm was ringing, so had to get an emergency electrician out to pacify my neighbours, and tracking down the fault meant turning my house upside down. I rushed it out, with many bad proof reading errors and ommissions, And have now, on the dawn of a new month, and a new Season, updated it. Probably, knowing me, it still has a far few errors! Now, I am rushing to look after my Grandson!

So, the reason there is a leap year, is that the Sun and the Moon have different cycles, which cannot be easily aligned. And secondly, the solar year is not a fixed number, it is not 365 days, but 365 days and a bit.

Originally though, probably, most cultures lived their lives with time keeping controlled by time markers from their everyday environment, days and nights, the waning and waxing of the moon, the seasons, and the changes in the rising and setting of the Sun. Budding nature would have provided other markers as to when to sow, to harvest, to prune, to slaughter, to worship and marry.

The months were given by the cycle of the Moon, which also gave us tides and menstrual cycles. The months were given names, which were often associated with the weather. The trouble was that the Solar year did not align with the Moon, soon the months would get out of kilter with the seasons. So over time, the society would find it was winter in June, or summer in December. (which is OK if you live in Australia).

Society dealt with this in a number of ways. It could be ignored, why shouldn’t it be cold in June, why should June always be in Summer? Another way was to add in extra days, or months, every so often to make sure June remained in the Summer. This is what Egypt, the early Romans and the Celts did. They kept their months aligned to the actual movements of the Moon, and aligned their Solar Year with it by the addition of extra days or a month or two. or a combination of both.

I reported on this in my post on the Terminalia for February 23rd. As I wrote:

Terminus was an old ancient God who was the God of the boundary, the border, the edge, the liminal God. February was the last month of the original Roman year, but the rulers of Rome added an intercalary month every so often, called Mercedonius in an attempt to keep the Solar year in tune with the seasons. And when the intercalary month was added, the last five days of February were given to Mercedonius and the resulting leap year was either 377 or 378 days long.. So, in those years, the 23rd of February was the Terminus of the year. (For more on Terminalia look at my post for February 23rd on Terminalia-god-of-the-boundary)

Now, as the Roman Republic became more sophisticated, the intercalary months were added at the direction of the Pontiffs, supposedly every two and sometimes every three years. But the Pontiffs were often swayed by political advantage, and by the time of Julius Caesar the seasons had got wildly out of sync with the calendar year. The Dictator, therefore, instituted ‘the Year of Confusion’ which was over 400 days long and brought in the Julian Calendar which realigned the calendar back in line with the seasons.

Caesar spent time with Egyptian Astronomers, trying to understand their solution to the problem. They identified that the year was not 365 days long but 356.25 days, so JC ‘fixed’the issue with a leap day every four years. Based on the almost correct calculation of a solar year being 365.25 days. The new calendar was inaugurated on the Kalends of Januarius 709 AUC, or as we would call it I January 45 BC. It became, in time, something the Romans were very proud of – rationalising, measuring, time itself. Romans counted their dates from the time their City was founded by Romulus in what we call 753 BC or 753 BCE. So, 45 BCE in our reckoning is 709 ab urbe condita (AUC ‘from the founding of the City) as the Romans saw it.

I prefer not to use BCE because it seems ‘dishonest’ to me. The idea of AD BC was made up based on a guess as to when Jesus was born. Changing BC to BCE may rid the date of an explicit Christian identification but masks the fact that there is no such thing as the ‘Common Era. What the Common Era is, is the idea made up in the Late Roman period guessing when Jesus was born/ So I think call a spade a spade, even if it’s a broken meaningless spade that is not fit for purpose, either replace it with something rational, or real or call it what it is.

The interesting thing is that Caesar put the leap year in on the 24th February. Why? Because February, being the month of death, was the end of the year. March 25th was originally the beginning of the Roman year (Caesar moved it to January 1st). Why March 25th? Because it was the Spring Equinox. If you look at my post for March 25th you will find out it is the date of the creation of Humanity, the Birthday of Adam, the conception of Jesus, and until 1752, the day the year number changed in Britain.

The other strange thing about the new leap day was that it was not called February 25th. It was not given a number. Rather, February 24th was two days long. This continued in Britain until the date February 29th started appearing in calendars in the 15th Century, although the legendary Lawyer, Edward Coke (1552 – 1634), refers to the two days of February 24th, but the two day 24th was completely replaced by February 29th in the 16th Century.

One slight complication to the story of February 29th was that February 29th did exist before the Julian reforms. When February was not interrupted by the intercalary month, as described above, it was 29 days long. Julius Caesar made the months alternate 30 and 31 except for February which was 29 days long. When the Senate gave Julius the honour of having the 7th Month named after him, things were OK, but then Augustus wanted the same thing. The Senate duly gave him the next month, which became known as August, but it only had 30 days. This could not be allowed! So they made it up to 31 and stole the 29th from February and made February only 28 days long. This change also meant that there were now three 31 days months in a row, so they reduced September from 31 to 30, boosted October to 31, reduced November to 30 and boosted December to 31,

Hence, we can no longer remember Caesar rational allotment of days in the month, and we need to hum to ourselves:

Thirty days have September
April, June, and November
February has twenty-eight alone.
All the rest have thirty-one.
Excepting leap year – that’s the time
When February’s days are twenty-nine.

But Caesar had not solved the problem of the shifting year, he had just minimised it. By the Council of Nicea in the early 4th Century (and not yet called AD!) the small error had changed the date of the Spring Equinox, from March 25th to March 21st. So, when Constantine convened the Council to bang the heads together of the Church leaders to unify their religion, particularly in regard to the date of Easter, and whether Jesus was equal to God. They fudged the complex issue of the date of Christ’s death, and used March 21st as the foundation of their calculation on the moon-based festival of Easter (more of which at Easter!)

It wasn’t until the 16th Century that Pope Gregory, solved the problem of the inaccuracy of Caesar’s solution. They resynced the days to the seasons by removing days from the Calendar. And they stopped the drift by fine-tuning the leap year system, by not having a leap year in those centurial years which were not divisible by 400. So 2000 was a leap year, but 2100 is not. This allowed the systems to align correctly to this day. (although there is of course a little more to it than this). But for that level of detail, you will love ‘The Calendar’ by David Ewing Duncan, or just look it up on Wikipedia or wait for me to compile various references to the Gregorian Calendar into a unified post on the subject.

Of course, Britain refused to join a Catholic innovation for nearly 200 years but, religious prejudice at last gave way to reason, when we adopted the Gregorian Calendar in 1752. In the process we lost 11 days, much to the horror of the London mob, who rioted against their loss.

See the following posts for the Roman Year:

Romulus’s 10 month year here

Roman Months here and more on the Ides of March here

Archaeology discoveries, February 2024

Sketch of a Roman skull of a man who was crucified.
Archaeology discoveries. The Image is a sketch of the ‘Facial Reconstruction, Impossible Factual/BBC’

Interesting Archaeology discoveries.

The following discoveries were reported in Salon IFA the newsletter of the Society of Antiquaries of London in Salon: Issue 526  7 February 2024, which you can see here:

Pliny the Elder’s Villa found near Vesuvius?

The 1st Century seafront villa, with views of the Bay of Naples and of Mount Vesuvius, has been excavated at the town of Bacoli, which was the port of Misenum. Pliny commanded the fleet as ‘Praefectus classis Misenensis’. Pliny tried to rescue his friends and family, ignoring warnings saying ‘Fortune favours the brave’, ‘Audentes Fortuna luvat’. It didn’t and he died, at Stabiae, by toxic fumes. Read more about the villa here:

Face Reconstructed for a Victim of Roman Crucifixion

A male skeleton found, 4 years ago, in a Roman cemetery in Fenstaton in Cambridgeshire was found with a 2-inch nail through his heel bone. BBC 4 has made a documentary about the recent reconstruction of the man’s face by, as Salon reports it:

‘US forensic artist Joe Mullins, of George Mason University, Virginia. He usually works with law enforcement agencies, reconstructing the faces of modern-day crime victims. ‘

To follow the details, read more here, or watch the BBC documentary, ‘The Cambridgeshire Crucifixion’, which can be viewed on BBC iPlayer.

For more archaeology read my post: https://www.chr.org.uk/anddidthosefeet/london-before-london-and-dna/

Published in February 2024, revised 2025

A History of the Roman Empire in 21 women

Below, I give links to the Late November and early December Posts I have revised and republished. But, first, I would like to tell you about a great lecture I heard at the British Museum, this evening. It was given by Dr Emma Southon on her book about women in the Roman Empire. Her viewpoint was that a study of women in the Roman Empire gives a radically different insight into the Roman world than the traditional. One full of humanity rather than normal evidence which is, generally, about wars, and Empires and bravery and horrific cruelty and ambition and honour. She started with the story of Turia, whose extraordinary epitaph on her tombstone miraculous survived and gave her husband’s view of his extraordinary wife, and his utter sorrow at his loss on her death. Below, is a review of the book and a link to a podcast with the Author.

So, here are the December posts. December 1st and 2nd give an overview of December and the meaning of Winter. December 3rd is about Advent and the fact that you were not allowed to marry during Advent. December 4 gives a Shakespearean view of a cold winter’s day, and a composition by Vaughan Williams.

And late November posts, November 28th tells some interesting tales, both ancient and modern, about Eels, Pies, Rock ‘n’ Roll and my horror of Jellied Eels. November 29th, tells you how to make a ‘dish of snow’ and introduces Ice Houses. November 30th is about Scotland and St Andrews. Like them if you like them! And share them if you want to share them.

New Discovery about Elections in Ancient Pompeii

Recent discoveries from Pompeii are being reported in a timely fashion on an interesting website – one of the recent posts is about the discovery of a Roman Electoral Poster. Please enjoy the read! electoral-inscriptions-discovered-in-pompeii

Below, I enclose a short section of my book ‘In Their Own Words – A Literary Companion To The Origins Of London‘ on Roman Elections, which might be of interest. But first, I have updated and republished my Almanac of the Past Blog posts for November 4th and November 5th, which you can see my following these links:

Extract from ‘In Their Own Words – A Literary Companion To The Origins Of London‘ about Roman Local Politics.

The forum in a Roman town was the central meeting place, used for offices, shops, market, meetings and political elections. Inscriptions show that the Londinium forum was the home of the provincial assembly, and that local government in London continued down to the ward (vicus) level. Surviving political `posters’ and graffiti from Pompeii provides some idea of the concerns of the Roman citizens:

Neighbours! Vote L Status Receptus for duumvir. He is fine. Posted by Aemilius Celer Vicinus.

A Plague on any wretch who scrubs this out!

Vote for M Casellius Marcellus ,a good aedile. He will grant great Games!

Bruttius Balbus for duumvir. Genialis supports him. He will conserve the treasury.

Trebius for aedile! The barbers support him.

M.Cerrinius Vatia for aedile! All night drinkers back him. Vatia for aedile! The pick pockets back him!

Spend for the public welfare! Keep the rates down!

— John Morris,‘londinium’22

A duumvir was the chief magistrate of the town, the equivalent of the Consul in Rome, and he was helped by `junior’ magistrates including aediles. As magistrates, they were expected to fund public works and entertainments from their pocket, so they had to be independently wealthy or backed by wealthy interests.

In addition, a property qualification could be imposed. A surviving charter provides:

A councillor of Tarentum…shall possess a building within the borders of the territory of Tarentum that shall be roofed with no fewer than 1,500 tiles.

Voting was strictly controlled, with returning officers, supervision by independent witnesses, and ballot boxes.

In Their Own Words – A Literary Companion To The Origins Of London‘ D A Horizons, 2009.  Kevin Flude

To buy Kindle version click here.  To buy paperback click on the paypal link below or  email kpflude AT anddidthosefeet.org.uk

Digital Heritage – The Past Deciphered by AI

This is one of the most exciting advances I have read about for a long time! A pile of burnt scrolls survive from the Villa dei Papiri, Herculaneum. They are being examined by several teams from American Universities including the University of Michigan, and the University of Kentucky. They are just beginning to read fragments of the texts, using all the scientific techniques they can throw at it including AI. The AI has begun to learn to read fragments of the tightly rolled scroll.

Burnt Scroll
Burnt Scroll

The scroll they are working on appears to be a piece about Alexander the Great and his legacy. It is an unknown text or to put it another way, it is potentially a brand new source of information for this period of time. It has been suggested that it might possibly be a copy of the lost diary of Alexander’s secretary, Eumenos or may have been written by a friend of the general Antigonos.  Either way, potentially eye witness accounts. Or not, as perhaps, they may be asking too much from the first investigation. It may be more prosaic. Time will tell.

The implications, however, are so exciting! Just as the amazing excavations at Stonehenge (and indeed in London) have revolutionised our knowledge of these places, so AI could introduce completely new insights into the past. There are many rolls that were burnt in the collection, but now AI is beginning to read them. what insights we might get even from small fragments? One of the scholars involved is particularly excited to imagine the discoveries that could be forthcoming from the Middle East

‘While others would love to see some of the lost work of the ancients, what I’d like to see is evidence of the turmoil that was happening in the first century around the development of Christianity and the Judeo-Christian tradition as it was evolving.’

Brent Seales, University of Kentucky

Part of scroll unfolded
Part of scroll unfolded

But those ‘lost works of the ancients’. There are so many that would rock history: Tacitus’s ‘Annals’ missing missing the last two years of Nero’s reign. Pytheas ‘On the Ocean’ with its first references to Britain in writing. 6 Plays of Aeschylus, 9 Books of Sappho and the list goes on. Have a look at Charlotte Higgins piece in Prospect Magazine for a little more detail.

Another feature of the study is that the teams have released images to the cloud and are encouraging others to ‘have a go’ at reading them. This shows the strides that Citizen Science has made, and how, scientists acknowledge that, in the days of big data, cooperation pays huge dividends.

My source of information is the marvellous The Society of Antiquaries of London Online Newsletter (Salon) which ‘is a fortnightly digest of heritage news‘ and for more information look at Issue 509.

Another source is Interestingengineering.com.

Mystery of Roman Concrete Solved?

Image credits: Concrete Interior or the Pantheon, FLICKR / CC BY-SA 2.0

The Society of Antiquaries Salon Newsletter has a fascinating report on an analysis of the virtues of Roman Concrete. Working as an archaeologist in the City of London, Roman concrete (opus signinum and opus caementicium) has long been a fascinating subject upon which I have pontificated (without a huge amount of research).

I first came across it at the GPO site just north of St Paul’s Cathedral and what I remember is the contrast to the sandy mortar of 10th/11th Century St Nicholas Church which we were also excavating.

Roman cement, which was pink, was incredibly hard. Medieval mortar was yellow and soft. You could successfully get through the medieval stuff with a trowel or, if you had to, with your finger nail. But opus signinum required a kango pneumatic drill. Properly, signinum has fragments of pottery bonded into the concrete, but we also found it used without inclusions.

Roman Cemement – Opus Signinum

According to the 10 Books of Architecture by Vitruvius (Marcus Vitruvius Pollio) it should be made using volcanic ash which outcropped around Rome and Naples. Without volcanic ash in Britain, the Romans ground down tiles/bricks and added it to lime and sand to make a very effective cement. It was often then ‘reinforced’ by using a mixture of cement and rubble limestone in the core of a wall.

As medieval Londoners dug under the City during building work or while digging pits, they often struck unlucky by hitting some rock-hard Roman foundations. The legend spread that the Roman cement was so hard because it was made of a magical formula that contained Bull’s Blood. (It was also normally said to be built by Julius Caesar!)

The Roman cement was also made in a water-proof version, allowing Roman amphitheatres to be flooded for naval re-enactments. All proper Roman archaeologists have also paid homage by going to Rome to see the totally amazing domed roof of the Pantheon, commissioned by Augustus’ right hand man Marcus Agrippa. Marcus Agrippa (27 BC – 14 AD).

So, this article by the Salon gives some explanation as to how the concrete vault of the Pantheon roof can have stayed up for 2,000 years and defied inevitable cracking. I have copied it word for word, (I did once ask if they minded and they said no) but also give a link to the original below.

By the way, the GPO site was a landmark in Roman Archaeology because it completely changed the view of early Roman London when we discovered densely occupied Roman houses, a long way outside of the area thought to be the core of the early City. And Vitruvius’s book on architecture is well worth reading. I might add a sample tomorrow?. Finally, I remember reading that when the Custom House in London suffered a collapse after only a few years, it was rebuilt by Robert Smirke (who also bulit the Classical British Museum building) using a new formulae for cement was is said to be the first concrete in Britain to surpass the quality of the Roman original.

https://mailchi.mp/sal/salon-issue-547287?e=34bc1ba8ed#edhighlights

Analysis of Roman Concrete Reveals Self-Healing Properties

Many of us will have stood in the Pantheon in Rome and wondered how this beautiful structure can still be standing today. It is the largest unreinforced concrete dome in the world, built under the emperor Hadrian in 126 AD. Researchers have recently been analysing the content and technique of mixing Roman concrete to identify why it has lasted so long and they may have uncovered its secret.

Admir Masic, Professor of civil and environmental engineering at Massachusetts Institute of Technology, led the research project, working with Harvard University. In his paper published in Science Advances, Masic explains that Roman concrete contains millimetre-scale white lumps known as lime clasts, which may have helped seal up cracks, formed over time.

The Romans made concrete by made by mixing lumps of volcanic rock and other aggregates, together with a mortar such as volcanic ash, a source of lime (calcium oxide) and water. The lime clasts found were ‘porous with cracks’ and had most likely been formed at a high temperature in a low water environment. This suggests the quicklime was not mixed with water before it was added to the other ingredients as is the case in modern concrete, but was mixed with the ash and aggregates first. This ‘hot mixing’ produces heat, which helps set the concrete and reduces the water content around the lime clasts.

This means that, if subsequently, water seeps into the Roman concrete, it will dissolve the calcium carbonate and form new calcite as it passes through the lime clasts, which will help to seal up any cracks that have formed. Indeed, cracks filled with recently formed calcium carbonate have been found in Roman concrete.

Masic and his team tested this theory out by creating chunks of Roman-style concrete, containing cracks 0.5mm wide. They ran water over the concrete and in the samples containing lime clasts, within two weeks, the cracks sealed over with newly-formed calcite. Control samples of the concrete made without the lime clasts, did not seal.

Masic believes modern construction techniques could learn something from the Romans; ‘Roman-inspired approaches, based for example on hot mixing, might be a cost-effective way to make our infrastructure last longer through the self-healing mechanisms we illustrate in this study.’ An added bonus is that the development of a more resilient concrete ‘could help reduce the environmental impact of cement production, which currently accounts for about 8% of global greenhouse gas emissions’.

Image credits: Concrete Interior or the Pantheon, FLICKR / CC BY-SA 2.0′

Plaque in the Roman Empire

Roman Skeleton Museum of London in Docklands Exhibition 2018 photo K. Flude

I was puzzled to find a message, from reader of this blog Harriet Salisbury, voicing interest in coming on my ‘Decline and Fall of Roman London’ Walk in order to find out about Roman Dental problems.

Harriet is not only a brilliant editor, but also the author of a great book on the oral history of war time London, so I had to follow up this puzzling comment. And my recent post on my upcoming walk said:

Faced with plaque, civil war, invasion, mass immigration,  industrial decline, reversion to barter; the authorities struggled against anarchy and descent into a Dark Age

Now there are many reasons for the decline and fall of the Roman Empire but I have never yet heard anyone, apart from me, blame dental plaque. So, I then spent a couple of hours changing the q of plaque to the g of plague in various places where the deadly dental disease was referred to. Of course, Harriet might equally have wondered whether a rash of information panels had been a contributory cause?

As you will know I have an interest in the history of health and medicine. A cursory glance at any of the skeletons you find in museums will normally show that pre-modern skulls have much better teeth health than modern people. And the reason for this is, mostly, because they did not have sugar to rot their teeth. Instead of sugar-created cavities, their problem tended to be wearing teeth out by the roughness of the grain they used. But I investigated more and found that recent work in Herculaneum and Pompeii had investigated Roman teeth health in a scientific manner. This showed that the diet of even the poor was much better than most modern diets because it was essential the much lauded ‘Mediterranean Diet’ with olive oil, no added sugar, lots of vegetables,fruits and smaller amounts of meat. In short, Roman society had a system in which even the poor had balanced nutritional diets, and therefore good levels of natural immunity.

Pompeii also had a high level of fluoride in the water. The Romans seem to have brushed their teeth with a flayed stick and used abrasives made of ‘ground-up hooves, pumice, eggshells, seashells, and ashes‘. They used a mouth wash of human and animal urine, and disgusting as this may seem, the ammonia would have acted as a cleansing agent.

To find out more about the science behind the story please go to: https://www.docseducation.com/blog/ancient-romans-had-healthier-smiles-we-do-today

This picture from ebay shows you a flayed stick toothbrush – I include the seller information so you can buy some!

Ebay Ad for natural toothbrushes

Harriet’s book was based on a wonderful oral history collection at the Museum of London. Worth having in you are interested in London history, the Blitz and ordinary people’s lives. And also for any lover of ‘Call the Midwife’.

This is a screenshot of ‘The War on our Doorstep’ so the link won’t work, but World of Books or any other online book seller (including the ‘evil empire’ but best not to boost the income of such stupidly rich people?)

I have updated and reposted my January 4th post to include what to look out for in the night skies in January.