Photos of the River Lee and Mrs Towser (the narrow boat with the orange gaz locker) by Harriet Salisbury.
I have been busy moving my narrow boat up the River Lee to Stansted Abbotts to have her bottom seen to.
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River Lee and Mrs Towser
February 20th The Sun Enters the House of Pisces
Content moved February 20th 2026
Walks 2023 – February – June
I am working on a new season, and these are the walks for the first six months – but more to come.
The Archaeology Of London Walk Sunday 2nd April 2023 11:15 Exit 3 Bank Underground Station To book
Jane Austen’s London Sat 2.30 pm 2nd April 2023 Green Park underground station, London (north exit, on the corner). To book
Chaucer’s Medieval London Guided Walk Aldgate Tube Sunday 16 April 2023 11.30pm To book
Chaucer’s London To Canterbury Virtual Pilgrimage Sunday 16th April 2023 7.30pm To book
The Peasants Revolt Anniversary Guided Walk Aldgate Underground Sunday 11th June 2023 10.45am. To book
The Peasants Revolt Anniversary Virtual Tour Sunday 11th June 2023 7.30pm To book
For a complete list of my walks in 2023 look here
Medlars – a Rude Fruit for Winter November 24th
Medlars were a very common and useful fruit particularly in the Medieval and Early Modern period. They are best harvested after the first frosts, although some say harvest in late October and store them because they can only be eaten when they are rotten and ‘bletted’. They also store well. They, therefore, provide a source of winter sweetness when there were few other fresh sources available.
They are from the Rosaceae family which includes apples, pears, rosehips and quinces. The English called them ‘open arses’ or ‘dog’s arses’ or ‘granny’s arses’ because of the way they looked until the more polite French name the Medlar caught on.
Shakespeare uses both words and uses their sexual connotations as they were thought also to look like female genitalia. A medlar was also a name for a prostitute. So in Romeo and Juliet this speech by Mercutio to Romeo and their mates contains some very bawdy thoughts:
If love be blind, love cannot hit the mark.
Now will he sit under a medlar tree
And wish his mistress were that kind of fruit
As maids call medlars when they laugh alone.
O, Romeo, that she were, O that she were
An open-arse and thou a poppering pear!
RJ 2.1.33
I think you can also see how good Shakespeare was at making his allusions available to all classes. For the sophisticated he begins with the reference to the French medlar and in case the groundlings are missing out throws in the ‘open-arse’ so they know what he is alluding to.
Medlars fell out of favour in the 18th and 19th Centuries. For more on medlars have a look at British Food history https://britishfoodhistory.com/2017/11/12/forgotten-foods-7-openarses/
Or watch this video from ‘the American Viscountess’ from which I extracted the picture of the medlar above.
Mystery of Roman Concrete Solved?
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.
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′
The Giant O’Brien
A few days ago the Hunterian Museum announced the decision to remove Charles Byrne from display. I have been watching the case for many years. It’s a fascinating story which was retold by Hilary Mantel in her excellent book ‘The Giant O’Brien’ published in 1998.
Generally, I’m all in favour of human remains on display in Museums. My own feelings is that I’d love my old bones to be displayed in a Museum in a few thousand years time. However, Byrne’s story is particularly poignant and argues the opposite case. Bryne was a giant, he just could not stop growing until he died. He died young and after making a name for himself (as the Giant O’brien) on account of his soaring height. (look at the catalogue entry in the Museum online collection for details of Byrne’s condition.)
John Hunter was the pre-eminent surgeon of the time, and was furiously collecting as many animal and human specimens as he could. Fantastically interested in anything and everything anatomical, he gives a shape to a Doctor Frankenstein figure. For example, his interest in electrical experiment – trying to get dead frogs to twitch with ‘life’ and he had a very active engagement with the Body Snatchers in order to investigate what made someone tall, small, fat, thin, ill, healthy, intelligent, thick, good, criminal and so on.
He pioneered various surgical techniques. Postillions (the people who rode on the horses pulling coaches) were prone to aneurysms as the horses kept squashing their inside leg. Hunter developed an operation to bypass the aneurysm. He tried it out successfully and then kept track of the patient somehow. When the postillion died the Resurrection Men would pay a visit to the local graveyard and dig up the body of the patient. Part of his thigh is on display in the Hunterian Museum (or at least it was the last time I looked). So you can see the success of Hunter’s ground breaking operation – one of wave of surgical developments of the 18th Century. The Hunterian Museum is the museum of the Royal College of Surgeons, and was founded by Hunter.
So, Hunter hears about the Giant O’Brien and finds out he is ill, possibly dying. He has his people keep tabs on him. Charles Byrne is determined not to end up on the anatomist’s slab. So, he organises his funeral in advance paying guards to look after his coffin. He orders a secure iron coffin and in addition, decides to be buried at sea. Because Byrne knows, as an eminent surgeon later on reported to a Commons Committee, that it wasn’t a case of whether the Body Snatchers would get a body but more how much they would have to pay for it if they really wanted it.
But, Byrne thinks he has done enough to die in peace.
Unfortunately, Hunter’s men tracked down the guarded room, and bribed the guards with what would have been a huge amount of money. Byrne was taken back to Hunter’s place, the body melted down, mounted, and was on display until the Hunterian Museum closed for refurbishment recently.
So, a step forward as he is no longer the subject of the public gaze. But in this case we absolutely know that Byrne did not want to be the property of the medical establishment. My own feeling is that he should be given his last wishes and be buried at sea.
Reference collections are very important for Science, and it is for this reason, I am sure, the Museum has not let go of Charles Byrne. But in this case, with this history, an exception should surely be made? He died on 1 June 1783
London Before And After The Roman Invasion
I have just finished a Guided Walk called ‘London Before And After The Roman Invasion’. Its the first time I’ve done this particular walk and it was very interesting because it focussed a lot of recent changes in ideas about early London. I decided to do the walk as wanted to refresh my knowledge of prehistoric London and the early Roman period.
So, when I first came to London as a young Archaeologist, we were engaged in a series of ground breaking archaeological excavations that completely revolutionised ideas about London.
So, old ideas were:
- There was a prehistoric London
- The City came into being as a Legionary Fortress built when the Roman Army was waiting for the Emperor Claudius to join them for the attack on the capital at Colchester.
- A formal road system was set up on Cornhill, with the North/South spine being the road north from London Bridge
- Southwark was a suburb on the other side of the bridge
- The town grew steadily and eventually spread over to the western hill – Ludgate Hill
- A fort was built in AD 120 then, c200AD, the Walls were built covering a large area because of the expanding City
- The Romans left and everything went to hell in a hand cart.
The new set of ideas were:
- People began to doubt the prehistoric London town in the early 20th Century, but it was completely dismissed by the 1970s and London was founded here simply because it was the best/only place for the Bridge and a superb site for the road junctions and Port.
- By the late 1970s evidence showed that London did not really get started till about 50AD, so the idea that London was a military foundation following on from a Legionary Fortress was dismissed. Instead, it was a town of civilians established by merchants taking advantage of the Bridge, the Road Junctions, and the Port.
- The formal road system was later than 43AD and Londinium was soon on both hills
- Southwark was rather more like South Londinium than a secondary suburb.
- Londinium had spread all the way to the later site of St Pauls by AD60 and its growth was very rapid. But decline set in as early as the 2nd Century. It struggled in the 4th Century and at the end of the Roman period there were not many people in it.
- The area inside the 200AD wall was not densely crowded, and the large size of the walled area was provably due to military decisions about the best defensive alignment for the wall.
- Roman London was already shrunken well before the end of the Roman presence in Britain.
Continued excavations created more data and the following discoveries were made
The foundation of London was dated to 48AD after dendrochronology dating of a wooden drain next to the main East West road through Roman London.
A Fort was built soon after the Boudica’s destruction of London in AD 60, just East of London Bridge
These two books were published and the new certainties about Roman London began to dissolve or resolve. Not yet sure which!
Lets have a look at those 7 points again:
- ‘There was a prehistoric London’ – Richard Coates in 1998 draw attention to the fact that the name Londinium is pre-Roman in origin and suggested it meant ‘Settlement by the flowing River’ Richard Hingley drew attention to the large amount of fine metal work in the river, and suggested a conclusion that , although there may not have been a prehistoric town before the Roman, the area was very important in the Iron Age, and suggest it was a ‘ritual landscape’ possibly associated with burial. Maybe, this might have been a factor in the Romans choosing the site to establish the crossing/town? Last year an excavation north of Liverpool Street found evidence of large scale feasting in the Late Neolithic leading some people to suggest London was an important ritual site before the coming of the Romans Dominic Perring dismisses ideas that it was an important area before the Roman period, and notes that most of the metal work is found further to the West. More about these discoveries in my post here:
- Dominic Perring cites evidence at three sites on Cornhill which suggests that London was indeed set up as a temporary Legionary Fortress in AD43, and suggests the first Bridge was a Pontoon Bridge. And therefore indeed built when the Roman Army was waiting for the Emperor Claudius to join them for the attack on the capital at Colchester. It was immediately dismantled.
- A formal road system was indeed set up on Cornhill, with the North South spine being the road north from London Bridge. This was set up in AD48, possibly still a supply base but began its transformation into a proper town c 52AD.
- Southwark was much more than a suburb on the other side of the bridge and had important formal buildings, possibly including the residence of the Procurator, after the Governor the most important person in Britain.
- The town grew quickly and soon spread over to the western hill – Ludgate Hill and the phases in this spread are detailed in Perring’s book.
- A fort was built in AD 62 which continued to about AD 85, and was possibly replaced immediately by a precursor to the Fort in the NW corner of the City near the old Museum of London and replaced in stone in AD 120 then, in c200AD, the Walls were built covering a large area because of the military requirements.
- I haven’t yet read the later London part of Perrings book, but he suggests that London develops when the Governor and the Emperor is involved in conquest, passification or development, and without government intervention London declines, so it develops in fits and starts and eventually the fits are more important than the starts and so it declines to virtually nothing.
Any way, congratulations to Dominc Perring who has created a really detailed description of the development of London. I’ve had to rethink quite a lot of my ‘old’ ideas and this is a great synthesis of the archaeology of London particularly over the last 50 years.
I’m sure I won’t agree with it all but I love the detail!
Jane Austen Walks
I have set up my year of Jane Austen walks.
Jane Austen’s London Walks
Sat 2.30 pm Green Park underground station, London (north exit, on the corner)
on the following dates in 2023: 2 April. 11 June. 9 September. 12 November.
And a Special Christmas version on 23 December 2023
An exploration of Mayfair, the centre of the London section of Sense & Sensibility and where Jane came to visit her brother
“It is a truth universally acknowledged, that a Jane Austen devotee in possession of the good fortune of a couple of free hours today must be in want of this walk.”
People associate Jane Austen and her characters with a rural setting. But London is central to both Jane Austen’s real life and her literary life. So, this tour will explore Jane’s connections with London and give the background to Sense and Sensibility, a good part of which is based in this very area. We begin with the place Jane’s coach would arrive from Hampshire, and then walk the streets haunted by Willougby; past shops visited by the Palmers, the Ferrars; visit the location of Jane Austen’s brother’s bank and see the publisher of Jane’s Books. The area around Old Bond Street was the home of the Regency elite and many buildings and a surprising number of the shops remain as they were in Jane Austen’s day.
This is a London Walk Guided Walk lead by Kevin Flude
To Book:
Christmas With Jane Austen Virtual London Tour
Saturday 23 December 2023 7.30pm
We look at how Jane Austen spent Christmas and at Georgian Christmas traditions and amusements.
“It is a truth universally acknowledged, that a Jane Austen devotee in possession of the good fortune of a couple of free hours must be in want of this virtual walk.”
This is a special walk, which looks at the traditions of Christmas during the Regency period and how Jane Austen might have celebrated it. It will give some background to Jane Austen’s life and her knowledge of London. We used her novels and her letters to find out what she might have done at Christmas, but also at how Christmas was kept in this period, and the range of ‘Curiosities, Amusements, Exhibitions, Public Establishments, and Remarkable Objects in and near London available to enjoy.
This is a London Walks Guided Walk by Kevin Flude, Museum Curator and Lecturer.
Review: ‘Thanks, again, Kevin. These talks are magnificent!’
To Book:
Plaque in the Roman Empire
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!
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’.
I have updated and reposted my January 4th post to include what to look out for in the night skies in January.
New Walk! The Decline And Fall Of Roman London Walk
Sunday 22nd January 11.30am Exit 2 St Pauls Underground Station
An exploration of what happened at the end of the Roman Period, and how the City became deserted, and then, reborn as an English City.
The first British Brexit? The Roman Britons kicked out the Romans in 407AD, and, soon, asked them to come back after a catastrophic collapse. Faced with plague, civil war, invasion, mass immigration, industrial decline, reversion to barter; the authorities struggled against anarchy and descent into a dark age.
But was that how it was? Wasn’t it a rather a transition into the Late Antique period in which life for most people went on much as before except paying taxes to local rulers rather than distant Romans?
The walk investigates why the Roman system in London broke down, and what really was the impact of the end of the Roman system in London? What is the evidence? and can we trust it? Or can we really do nothing much more than guess?
We tramp the streets of London in search of light to shine on the dark age of London.
This is a London Walks event by Kevin Flude, ex Museum of London Archaeology and Museum Curator
To Book: