The Humble Toothbrush

This blog focuses on the humble toothbrush: that everyday object that we too easily take for granted. Although many may consider the toothbrush a fairly insignificant and disposable item, it actually has rather an interesting history…

Early forms of the toothbrush have been in existence since about 3000 BC. Some Egyptian tombs have been found to contain ‘toothsticks’ demonstrating that cleaning teeth was clearly considered an important activity thousands of years ago.

It wasn’t until 700 AD that bristle toothbrushes were invented in China. These toothbrushes comprised of handles made of bone or bamboo and while bristles were fashioned from the hairs from the back of a hog’s neck!

 

Image 1: Toothbrush with horsehair bristles, London, England,1870-1920. Credit: Science Museum, London, CC BY.

 

Image 1 shows two toothbrushes that are part of a collection from the Science Museum in London. Both are made by the firm Savory and Moore. Savory and Moore was actually a dispensing chemist, and was the only retail outlet allowed in the district of Belgravia at the time. It served the royal family so it would be reasonable to assume that the owner of these toothbrushes was fairly wealthy. The toothbrush handles are made of ivoride, whilst the bristles are horsehair.

Nylon bristles were first used for toothbrushes in 1938. This new form of toothbrush was rapidly adopted due to growing concerns about oral hygiene during the Second World War. Indeed, the first truly ‘electric’ toothbrush was invented at the end of the 1930s. However, it was deemed ineffective and so sales never really took off. 1954 saw the introduction of ‘Broxodent’, the first usable electric toothbrush. However, this toothbrush was fairly unsafe given its high voltage and the fact that it was typically used in the bathroom where the presence of water further enhanced its electrocution danger! It wasn’t until 1961 that a cordless and rechargeable model of electric toothbrush became available, manufactured by General Electric – this sold much better. The electric toothbrushes that we have today have come a long way: they run on a lower voltage, have improved battery life and are rechargeable.

And the history of toothpaste? Well that’s another story..!

 

 

Further reading

  • ‘The History of the Electric Toothbrush,’ accessed 4/8/19. Available at: https://www.electricteeth.co.uk/the-history-of-the-electric-toothbrush/
  • ‘Prison, Suicide, & the Cold-Climate Hog (the sordid history of the toothbrush,’ The Museum of Everyday Life, accessed 4/8/19. Available at: http://museumofeverydaylife.org/exhibitions-collections/previous-exhibitions/toothbrush-from-twig-to-bristle-in-all-its-expedient-beauty/a-visual-history-of-the-toothbrush

 

Lucy Havard

Joseph Bazalgette (28/3/1819 – 15/3/1891)

Thames Water, the authority responsible forLondon’s water and sewage system, is currently building a massive new ‘Super Sewer’ known as “Tideway”. Approximately 25km in length and due for completion in 2024, this project is being undertaken to prevent the release of thousands of tons of untreated sewage into the River Thames on a daily basis. This contemporary, complex and sometimes controversial civil engineering project is a reminder of the birth of London’s sewage system, designed by Joseph Bazalgette, born two centuries ago last month.

 

Portrait of Sir Joseph Bazalgette. Credit: Wellcome Collection. CC BY.

 

161 years ago Victorian MPs were busy arguing and prevaricating over the cost and necessity (or not) of building and funding a proper purpose-built sewer system, designed by Bazalgette. They rapidly ceased all opposition to the project during the long hot summer of 1858 when low tides meant that huge quantities of untreated sewage that normally ran into the Thames were deposited on the river’s foreshores. The resulting appalling smell became known as “The Great Stink”. Believing, as most did at that time, that bad smells spread disease, MPs had to hang sheets soaked in carbolic against the windows in the Palace of Westminster to stop the suffocating stench. Before finally leaving The House ‘en masse’ the MPs quickly voted in the necessary funding for Joseph Bazalgette’s brilliantly conceived sewer system. It consisted of “intercepting sewers”, pumping stations and treatment works that are still being used today thanks to the high quality brick-lined tunnels and the use of durable Portland cement.

 

Civil engineering: construction drawings for the Thames Embankment. Coloured drawing, 1865, after Sir J. Bazalgette. Credit: Wellcome Collection. CC BY.

 

Bazalgette was a brilliant engineer, who started his career working on various railway projects. He was responsible not only for the London Sewer System but also for the Thames Embankment, and numerous major roads in London such as Shaftesbury Avenue and Northumberland Avenue. He strengthened or rebuilt 12 bridges over the Thames and freed them from tolls. He also engineered the Blackwall Tunnel and the Woolwich Ferry, and important parks such as Clissold Park, Finsbury Park and Victoria Park “the green lung of East London”.

 

However, it is Bazalgette’s sewer system for which he is probably most famous. He designed it anticipating a population increase in London from 2 million to 4 million – extremely far-sighted for the time. Given that the current population of London is approximately 8.5 million, no wonder a ‘Super Sewer’ is needed to provide for the increased strain on the system. More important than saving Londoners from a further ‘Great Stink’, Bazalgette’s work played a critical role in saving the lives of many thousands from deadly water-borne infections such as cholera. For this, he deserves to be remembered.

 

 

Further Reading

  • Stephen Halliday,The Great Stink of London: Sir Joseph Bazalgette and the Cleansing of the Victorian Metropolis(Sutton Publishing: Gloucestershire, 1999).
  • ‘Tideway – Reconnecting London with the River Thames,’ accessed 30/3/19, available at: https://www.tideway.london.
  • ‘Thames Water,’ accessed 30/3/19, available at: https://www.thameswater.co.uk/

 

 

Hermione Pool

 

The Story of the Stethoscope

One might not automatically recognise the image below as that of an early version of the medical stethoscope. It certainly looks very different today. This blog focuses on the invention of this instrument, synonymous with the medical profession, over 200 years ago.

 

Laennec-type monaural stethoscope, France, 1851-1900. Credit: Science Museum, London. CC BY.

 

Where did it all begin?

The story of the invention of the stethoscope begins with a young French physician in Paris, René Laennec. It was in 1816 that Laennec was called to see a rather fat and buxom young woman with a ‘diseased heart’. Feeling awkward, embarrassed and improper at putting his ear so close to this woman’s chest in an attempt to listen to her heart, Laennec sought to find an alternative method. He described his predicament and later actions in the medical text De l’Auscultation Médiate, published in August 1819:

I happened to recollect a simple and well-known fact in acoustics, … the great distinctness with which we hear the scratch of a pin at one end of a piece of wood on applying our ear to the other… I rolled a quire of paper into a kind of cylinder and applied one end of it to the region of the heart and the other to my ear, and was not a little surprised and pleased to find that I could thereby perceive the action of the heart in a manner much more clear and distinct than I had ever been able to do by the immediate application of my ear.’

Laennec modified this method of a rolled up piece of paper to make a wooden cylinder, measuring 25cm by 2.5cm. He called this piece of equipment a ‘stethoscope’, the name derived from the ancient Greek stethos meaning ‘chest’, and skopein meaning ‘look at’. The stethoscope became an essential item in Laennec’s medical bag and he utilised it to listen to both the heart and lungs of his patients.

 

Reception

Although a few physicians resisted the introduction of the stethoscope, maintaining that it was best to listen only with one’s ear, the vast majority of the medical profession embraced its use. The invention quickly spread over Europe in the early 1820s and the design was further developed and improved upon. By the end of the nineteenth century, this wooden instrument had morphed into something more akin to the modern-day stethoscope. Flexible tubing, first made out of rubber, and then plastic, made the stethoscope both easier to use and transport; whilst binaural earpieces improved the quality of the sound for the listener. The stethoscope works by transmitting acoustic pressure waves from the chest-piece through the hollow tubes to the listener’s ears. Today, there are even more advanced electronic stethoscopes which amplify body sounds improving further the sound transmitted.

 

A 19thcentury stethoscope with a bell-shaped end. Credit: Wellcome Collection. CC BY.

 

The meaning of the stethoscope

The significance of a stethoscope in the twenty-first century cannot be under-estimated. It confers identity and, to a certain degree, status. Its wearer is automatically assured to be a member of the medical profession. It implies trust, understanding and knowledge. In this way, Laennec’s stethoscope is incredibly valuable, both from a diagnostic and symbolic perspective.

 

 

 

Further Reading

‘The story of Renee Laennec and the first stethoscope,’ Past Medical History. Available at: https://www.pastmedicalhistory.co.uk/the-story-of-rene-laennec-and-the-first-stethoscope/, accessed 9/3/19.

‘Stethoscope,’ Brought to Life – Exploring the History of Medicine. Available at: http://broughttolife.sciencemuseum.org.uk/broughttolife/techniques/stethoscope, accessed 9/3/19.

 

 

Lucy Havard

 

The Flint Water Crisis: have lessons from history been forgotten (again)?

‘That men do not learn very much from the lessons of history is the most important of all lessons that history has to teach’Aldous Huxley

The Flint Water Crisis, which started in 2014 and is still on-going, is a contemporary example of where lessons from history have been ignored.  Briefly, the authorities in Flint, Michigan, decided to replace the water supply from Lake Huron with the less expensive water from the Flint River. Unfortunately, the Flint River was heavily polluted and this led to Legionnaire’s disease and lead poisoning among residents using the water supplied by lead pipes. Of particular concern is the expert opinion that almost 9,000 Flint children are at risk of developmental difficulties and long-term conditions due to lead poisoning. The authorities have been heavily criticised for not testing the safety of the Flint river water in advance and for the delays in both accepting that there was a problem, and in implementing the changes necessary to supply safe water. The crisis has sparked intense political and media debate and several prosecutions are pending.

 

Image 1: Gums and tongue from a case of lead poisoning. Credit: St Bartholomew’s Hospital Archives & Museum, Wellcome Collection.

In the nineteenth century, several reports of lead poisoning secondary to lead pipes in Britain and the USA appeared in the medical literature and the popular press. The problem in Britain was widespread but particularly evident in Yorkshire, Lancashire and Scotland. In Sheffield, the problem was first reported in 1885 by the Medical Officer of Health and was traced to the water from one reservoir that corroded lead supply pipes and lead-lined cisterns, hence contaminating the domestic water supply. The resistant Sheffield Water Company only agreed to add lime to the water after a public inquiry in 1890. Of even greater concern is the shocking 120 year delay in accepting that lead poisoning in Glasgow was due to a combination of the water supply from Loch Katrine and lead supply pipes.

Could the Flint water crisis happen again? Yes, sadly it could, and the words of Huxley resonate strongly here. But, if we listen to the lessons of history, and learn from them, such needless harm can be prevented.

 

Further Reading

  • Anna Clark, ‘Nothing to worry about. The water is fine,’ The Guardian.17thJuly 2018, accessed 24/1/19. Available at: https://www.theguardian.com/news/2018/jul/03/nothing-to-worry-about-the-water-is-fine-how-flint-michigan-poisoned-its-people.
  • Mona Hanna-Attisha et al, ‘Elevated Blood Lead Levels in Children Associated with the Flint Drinking Water Crisis: A Spatial Analysis of Risk and Public Health Response,’ Am J Public Health.Feb 2016.106(2): 283-90.

 

Mike Collins

 

 

Elizabeth Garrett Anderson: a modern woman 100 years ahead of her time

As a junior doctor possessing two X chromosomes, it is easy to applaud the achievements of Elizabeth Garrett Anderson (1836-1917), widely revered as the first British female doctor. It is infinitely harder to establish exactly how she succeeded and to quantify the relevance of this extraordinary woman who died just over 100 years ago. Can we still learn from her example, or has too much time passed to draw significant parallels in today’s modern world?

 

Image 1: Elizabeth Garrett as a young woman, Wellcome Images

Elizabeth Garrett Anderson wrote to a friend in 1864: ‘My strength lies in the extra amount of daring which I have as a family endowment. All Garretts have it.’ EGA did have ‘daring’, and she wasn’t scared to do things differently. She is frequently referred to as ‘a pioneer’, and with just cause: EGA was the first woman to qualify in Britain to practice medicine, the first woman to qualify as a doctor of medicine in France, the founder of the first hospital staffed by women, the first female member of the British Medical Association (BMA), the first female Dean of a British medical school, the first female mayor in Britain; the list goes on. EGA’s nature as ‘the first’ engendered two conditions: one, that the medical profession as a whole had not expected, nor prepared, for the possibility of a female attempting admission to their ranks; and two, that any doors that remained open within the medical profession were swiftly slammed shut soon after EGA had passed through them. The permission for women to take the Licentiate of the Society of Apothecaries (LSA) examinations to obtain a medical degree, and admission of females to the BMA may be cited as examples here. Consequently, EGA’s nature as a ‘pioneer’ conferred a significant advantage, and it was initially harder, as opposed to easier, for women to qualify as doctors after Elizabeth Garrett Anderson had succeeded.

 

Image 2: Elizabeth Garrett Anderson, Wellcome Images

Not only did EGA have an unwavering belief in herself and her ability to become a doctor but she put her career first: this was unprecedented in mid-Victorian Britain. She married comparatively late, at the age of 34, despite the average age of contemporary females entering matrimony being just 23 years in 1871. Importantly, marriage took place only after she had successfully completed her studies to become a fully qualified doctor. She had previously declined an offer of marriage in 1865 from her sister Millicent’s future husband, the MP Henry Fawcett. Even after becoming engaged to James Skelton Anderson, she worried that this might jeopardise her career as a doctor and her fight for women’s suffrage: ‘I believe I should almost die of the sense of something akin to guilt, if I found myself, three years hence, really out of the medical field’. This excerpt clearly demonstrates an immense sense of duty. EGA felt herself carrying the weight of the future of women’s rights on her shoulders, and this was constantly in the forefront of her mind.

Elizabeth Garrett Anderson changed the course of women in medicine indefinitely, and more broadly, had an integral role in promoting the women’s suffrage movement on a national scale. Women today can identify with EGA given that she mastered the ability of the ‘modern woman’ to ‘have it all’ – with both a successful career and a fulfilling family life. In 1871, The Lancet proposed ‘if [Elizabeth Garrett Anderson] succeeds in combining the two functions of mistress of a household and medical practitioner, she will have performed a feat unprecedented in professional history, and added another notable incident to this annus mirabilis’.

 

Quod erat demonstrandum.

 

Further reading:

  • Glynn, J. (2008). ‘The Pioneering Garretts – Breaking barriers for women’, Hambledon Continuum, London.
  • Garrett Anderson, L. (2016). ‘Elizabeth Garrett Anderson 1836-1917’, Cambridge University Press.

 

Lucy Havard