Written by Rachel Wood, Associate Professor, Oxford Radiocarbon Accelerator Unit, School of Archaeology, University of Oxford.
Radiocarbon dating is routinely used to work out the age of archaeological and palaeontological sites, and often pops up in news articles and TV dramas. But some substantial problems remain. One of these is the calibration process, which allows us to convert the ratio of 14C (“radiocarbon”) and 12C (the common stable form of carbon) to an age estimate. This is particularly challenging when we are trying to date marine shells or any animal that has eaten food from the marine system. This means that it can be difficult for us to get an accurate age for a sample that should be straightforward – for example, the skeleton of Medieval person or a Mesolithic dog.
The Oxford Radiocarbon Accelerator Unit is starting a project looking for samples of marine shells to help resolve this problem (Fig. 1). Natural history collections in museums are key to its success, and we would be very grateful to hear if anyone has a collection of pre-1950 marine bivalve shells.
Figure 1. Marine bivalves, suitable for helping us to calibrate radiocarbon dates. Please let us know if you have similar material that can be analysed by sampling a small strip from the edge. (Photo Peter Ditchfield, Courtesy Oxford University Museum of Natural History)
The Problem
At school, we are taught that radiocarbon dating works because radiocarbon decays radioactively at a known rate. By comparing the amount of 14C to a stable form of carbon called 12C, we can work out the age of a sample (Fig. 2). This is true, but only partially so because the starting 14C:12C varies. To get around this problem, we need to calibrate radiocarbon dates. Most 14C is produced in the upper atmosphere, and is incorporated into plants by photosynthesis and then passed through the food chain. This means, that if someone is eating terrestrial food – they will have a similar 14C:12C ratio in their bodies as in the atmosphere.
Written by Su Liu, BA English Language and Literature student at the University of Sheffield, formerly summer intern (2023) at Amgueddfa Genedlaethol Caerdydd – National Museum Cardiff.
Thomas Drummond, a Scottish naturalist, witnessed the tragedy of his accompanying Native American family – the Iroquois hunters had just lost their beloved and a newborn in the severe winter of Saskatchewan, Canada. Yet their journey had to be continued to collect the 286 specimens in Drummond’s Musci Americani, one of the richest collections of North American mosses.
‘…the whole of the continent of North America has not been known to possess so many Mosses as Mr. Drummond has detected in this single journey.’ – Sir William J. Hooker (1830)
Above is a real event in Drummond’s Sketch of a Journey to the Rocky Mountains and to the Columbia River in North America, which records his excursions during Franklin’s second land expedition. It has been adapted into an interactive digital narrative, Snow, Bonfires and Mosses, in which the reader engages with a combination of novel, visualisations, sound effects and choice-making. Choice-making allows the reader to experience different narratives and explore possibilities amid ambiguities in history.
This browser game is accessible on most devices and comes with an ‘encyclopaedia’ that includes a selection of Drummond’s moss specimens and external links to the biographies of all historical characters.
Lost stories of a distant adventure and forgotten collectors
The story of Drummond’s adventure began in Saskatchewan, 1825, where he parted ways with Franklin’s party and was joined by Iroquois hunters employed by Hudson’s Bay Company, a dominant fur trading company at the time. Their journey near the Rocky Mountains was an underdeveloped version of Man vs. Wild, surrounded by hunger, blizzards, wildlife, and humans – conflict between different tribes continued regardless of the Europeans’ intrusion.
Drummond made excursions whenever he had the opportunity, followed by sleepless nights when he had to treat his specimens before the fur brigade departed. At times, he failed to follow the fur brigade’s pace and consequently much of his work was lost or destroyed. By the time he was brought back to reality from work, he realised that he had been left ‘alone with the Indians’.
In contrast with Drummond’s objectives, the emphasis of the expeditions had been more on the exploitation of new trading routes. The capitalist powers were eager to establish colonial influence in North America and appeared to have taken local labour for granted, so the natives were not having a great time either. Drummond sometimes found the ‘fickleness’ in them hard to deal with but nevertheless depended on their work.
My colleague and BA history student Harry Pointon has pointed out the conventionalised indifference towards local hunters in the early 19th century, whose contributions are acknowledged in Drummond’s Sketch due to the complexity of his journey, as the natives play essential roles in the naturalist’s survival and are experienced guides to the flora in their natural habitat. With that in mind, my digitalisation of the exsiccatae (numbered collections of dried herbarium specimens with a common theme or title) goes in tandem with decolonising the history of the participants, especially the Native Americans.
Behind the scenes of Snow, Bonfires and Mosses
I had a blast writing, drawing and programming to make historical science approachable without being a bore, especially for slightly older children. It was hard to imagine myself working on two-hundred-year-old mosses as an English student, but I was beyond excited to see moss specimens in a great variety of sizes and colours. With the help of the Biodiversity Heritage Library (BHL) and my supervisors, I was able to put together a full timeline of events without much barrier to scientific knowledge.
The historical accounts were quite a fun read. Early modern science writing (approximately from the 17th century onwards) consisting of all sorts of information, from each step of the experiments (even if it results in failure) to personal remarks from the researchers. Unlike contemporary science writing which aims to be brief and impersonal, these accounts are vividly descriptive, and they highlight the presence of all participants: naturalists, hunters and fur traders. Drummond’s Sketch is an excellent resource that conveys his passion for botany and has proven itself practical in helping me construct my storytelling of the specimens. It is also proof of Native American involvement in naturalist excursions.
Apart from the emphasis on Drummond’s excursions and specimens, the narrative also presents parts of Native American culture throughout the characters’ dialogues. Iroquois people, for example, tend to have a strong belief in astrology and female leadership. This will hopefully create a fuller image of the Indigenous collectors, their lives, and the ways they were treated by the Europeans.
As a literature student, my understanding of decolonising history is the liberation of artefacts from hidden archives and unravelling the stories of neglected participants in the most accurate detail as possible. Drummond’s Sketch is perhaps a fortunate case for decolonising the archive, considering the common lack of credit for Native Americans. It is encouraging to see readers entertained and captivated by the story, and hopefully this has been an inspiring attempt at digitalising and decolonising museum archives for educational purposes.
Pat Morris is the authority on the history of British taxidermy, and there is arguably no-one better to write an exploration of the specific context of taxidermy collected for and displayed in private country houses. Although their materiality is identical, by their nature, these collections are often conceptually very different – the antithesis, even – to those in public museum. These differences are not the focus of the book, nonetheless this perspective offers great potential to help us consider more roundly the story of taxidermy and those that made and collected it.
The similarities museum and country house collections do share include their origin-stories, and of course the practicalities of preserving specimens. Like museums, these private collections trace their histories back to cabinets of curiosities. Preservability was fundamental to what could be kept, and Morris begins by explaining that early cabinets of curiosities in country houses were mainly items that required no preservation – dry materials like shells and bone. The only skins that were widely kept were those that could be simply dried without being prone to insect attack, which is why durable specimens like taxidermy crocodiles, hollowed-out armadillos and inflated pufferfish were commonplace in these early collections, rather than the birds and mammals which later became the norm.
Written by Richard Crawford, who has just completed a PhD thesis at the University of the Arts London, entitled ‘Re-presenting taxidermy; Contemporary Art interventions in Natural History Museums’.
I am used to seeing trophy specimens in mainstream natural history museum collections – for example, the crouching tiger shot by King George V in 1911 that is on display in the natural history galleries at the Royal Albert Museum in Exeter – but I was surprised to see a taxidermy specimen of a big Brown Bear at the National Museum of Natural History, Sofia, holding a medal that it had been awarded at the Berlin International Hunting Exhibition in 1937.
The prize winning brown bear in Sofia Natural History Museum
The 1937 Berlin International Hunting Exhibition showcased all manner of hunting trophies including mounted antlers, boar heads, bear skins and various taxidermy animals. It also featured demonstrations with live animals, including hunting eagles and a pack of beagles. The event was given official approval by the then prime minister, Hermann Goering, who opened the exhibition amid fluttering Nazi flags and rows of hunters dressed in smart grey uniforms. In his opening remarks, Goering stated his view, that hunting could promote international peace:
Submitted by Clare Drinkell, Senior Curator Botanist at the Royal Botanic Gardens, Kew.
Editors: Nina Davies, Clare Drinkell, Timothy Utteridge. 290 pp, 234 x 156 mm. Over 700 colour photographs. Paperback, ISBN 9781842467695. Kew Publishing, TW9 3AE, UK 2023. £25.00. https://shop.kew.org/kew-herbarium-handbook
Cover page of The Herbarium Handbook
The new Herbarium Handbook is a key new addition to Kew Publishing’s series of handbooks, including The Plant Glossary and The Temperate Plant Families Identification Handbook. Unlike the other books in the series the Herbarium Handbook is a new version of a book first compiled and edited by Kew botanists some thirty-four years ago. The initial Herbarium Handbook came about following an extremely popular International Diploma Course in Herbarium Techniques at Kew. The demand to attend the course was so high that the number of applicants far exceeded places on the course. In view of the interest, the main information imparted during the course was published as a manual, widely recognised as an important reference for fundamental aspects of herbarium care and management.
NatSCA 