Tag: history

An Eighteenth-Century Botanist, Silk Merchant and Miner

Illustration of silkworm moth, 1792. Credit: Wellcome Library, London.

By Matthew De Cloedt

After reading Hans Sloane’s Natural History of Jamaica Henry Barham saw an opportunity to strike up a correspondence. Barham first wrote Sloane in 1712, praising the utility of the NHJ and relaying that the two men had much in common. He then informed Sloane of his hopes to contribute to the project of researching the natural history of Jamaica, enticing him with unique information, odd specimens, and curious accounts of great slave healers.

Barham pursued each of his pastimes with great enthusiasm. A surgeon by trade, he was described by a jealous contemporary as a “Botanist-Silk-Merchant-Miner” after a political appointment by Jamaica’s Governor.[1] With a keen eye for business Barham used his knowledge of the island to impress upon Sloane the great economic opportunities it presented. There was more than a hint of truth to his critic’s contention, however, for Barham sought financial support from Sloane for ventures in botany, mining, mercantilism, and silk production.

In 1716 Barham traveled to London to explore the possibility of silk production in England. Staying at Great Carter Lane, he better acquainted himself with Sloane and was soon given the opportunity to present his short treatise, An essay upon the Silk-worm, to the Royal Society. Barham’s presentation must have gone well, for Sloane proposed him as a fellow in 1717. This was important, but only the beginning of the undertaking as far as Barham was concerned. As the investigation was “design’d for the Publick” what Barham really desired was exposure to individuals who could invest in his business.[2] To that end he sent Sloane multiple skeins of silk to be shown to the latter’s great network of contacts.

Sloane proved more useful than Barham could have imagined, connecting him to King George I’s physician Johann Steigertahl. In turn, Steigertahl ensured that Queen Sophia read Barham’s tract and promised to lobby the King on his behalf. This would have been a great coup for Barham, as he would have gained financial support and the royal seal of approval. Steigertahl assured Sloane the Queen was very interested in the possibility of producing silk domestically, assuring him the proposal was “well received when I offered it to Her Majesty.” Sophia believed it was possible to create an industry in England for she knew of “a good strong silk” produced near Luneburg. If silk was successfully cultivated in the German climate what was stopping the English from entering the market?

Steigertahl was required to stay close at hand while the Queen consulted with Mr. Appletree and Charles Spencer (third earl of Sunderland). Reassuringly, James Stanhope (first Earl Stanhope) promised Steigertahl he would personally speak to the King about the prospect of royal patronage for Barham’s silk business. Thus, Sloane was led to believe the prospects were good and the project might lead to collaboration with the Crown. Sloane’s letters to Barham are not in the collection, but given the positive tone of Steigertahl’s communications it would have seemed that there was a good chance Barham would soon be managing a silk farm.

Unfortunately things did not turn out as expected. Barham returned to Jamaica in 1720, either full of hopeful expectations for royal support or heartbroken that nothing came of Sloane’s correspondence with Steigertahl. Like his many other attempts to use Sloane to gather investors Barham’s attempt to produce silk in England floundered. Perhaps Barham was one of the many who lost opportunities after the South Sea Bubble burst.

Henry Barham truly was a “Botanist-Silk-Merchant-Miner.” Though his many attempts to use Sloane for material gain were failures he proved a useful contact. A significant amount of information that Barham collected on the medicinal qualities of plants in Jamaica was published in the second volume of Sloane’s important Natural History of Jamaica. However, recognition for his contributions to natural history was only part of Barham’s mission. Evident in his correspondence with Sloane is his desire to capitalize on the economic opportunities in Jamaica, England, and the Americas. He continued to write Sloane after the failure of his silk scheme, but his desire to become a wealthy man never materialized. Henry Barham died at his Jamaican home in 1726 in much the same position as when he first contacted Sloane.


[1] Raymond Phineas Stearns, “Colonial Fellows of the Royal Society of London, 1661-1788”, Notes and Records of the Royal Society of London 8, no. 2 (Apr., 1951), 205.

[2] Henry Barham,“A Letter of the Curious Mr. Henry Barham, R. S. Soc. To Sir Hans Sloan, Bart. Vice-President of the Royal Society; Giving Several Experiments and Observations on the Productions of Silk-Worms, and of Their Silk in England, as Made by Him Last Summer”, Philosophical Transactions (1683-1775), vol. 30 (1717-1719), 1036; Henry Barham, An essay upon the Silk-worm (London, 1719).

Giants’ Shoulders #55: Curiosities, Utility and Authority

Welcome to the 55th edition of The Giants’ Shoulders, a blog carnival that rounds up history of science blogging from the last month. This carnival takes as themes three issues that would have been very familiar to eighteenth-century collector and physician, Sir Hans Sloane: curiosities, utility and authority.

Richard Greene’s museum at Lichfield, the “Lichfield clock”
Credit: Wellcome Library, London.

Curiosities for Sloane were wide ranging and could include interesting natural objects, strange stories, or ingenius man-made ones. Over at depictedscience there is an excerpt from Robert Hooke’s Micrographia (1664): a detailed picture of a fly as seen through a magnifying glass, along with a short description. Strange stories always captured the interest of early modern scientific minds. Adrienne Mayor at Wonders and Marvels writes on Sir Arthur Conan Doyle and a sea monster, while Laetitia Barber at Morbid Anatomy has some ideas on making your own ghosts. New inventions showed human ingenuity, such as the umbrella-vator from the 1780s (The Appendix tumblr) and the stethoscope (The Rose Melnick Medical Museum). Richard Carter at The Friends of Darwin porposes a theory for what some ancient Roman jars might be, reminding me of early Philosophical Transactions letters. But the greatest curiosity of all this month is the ideal historian of science spotted over at The Renaissance Mathematicus, though perhaps Thomas Young the polymath, discussed at OpenScientist, might have fit the bill.

Sloane, like many eighteenth-century people, believed that knowledge should be beneficial, especially to society as a whole. From Seb Falk we learn that knowing how to use an astrolabe could save your life, while Jonathon Keats at Culture Lab wonders whether the science in Sherlock Holmes stories would actually have worked. Maria Popova (Brain Pickings) recounts the tale of Charles Babbage’s fight against noise pollution, a battle that he eventually (sort of) won. Jai Virdi has a series of posts, starting with “The Pretensions of Dr. Turnbull“, that look at the nineteenth-century debates about the efficacy of Turbull’s treatments for deafness. Turnbull’s methods may have been in question, but Alfred Russel Wallace’s 1876 map of evolution in the natural world has stood the test of time, since it was only just updated in 2012. RIP to Rita Levi-Montalcini, a truly useful person who brought benefits to society throughout her life. She recently died at the age of 103 after a full life in which she overcame anti-semitism, a male-dominated establishment and scientific dogma — and won the Nobel prize.

Sloane lived at a time when medical and scientific authority was in flux, as they tried to establish who should be considered reliable–a question that hasn’t gone away, just changed form. Seth LeJacq discusses the different treatments for breast cancer preferred by early modern surgeons and their patients, while Vanessa Heggie considers the history of dieting advice. Kirsten Walsh at Early Modern Experimental Philosophy suggests that Isaac Newton and his contemporary experimental philosophers had fundamentally different worldviews, while Thony Christie asks who kept Stephen Grey from publishing in the Philosophical Transactions. Possibly Sloane… In December, there was a hullabaloo about science, authority, and criticism, which is summed up nicely by Rebekah Higgit who wonders what scientists and historians each bring to the analysis of science in society.

Museums are sites where authority, utility, and curiosity all come together, much as they did in Sloane’s own collections. At American Science, Lukas Rieppel ponders the rise and fall of a research mission in a natural history museum: what does it say about the broader society when a museum decides that research is no longer important? Sloane, who collected so that he might understand the world around him, would have been troubled by the lack of curiosity in curiosities.

Giants’ Shoulders #56 will be hosted by Michael Barton (@darwinsbulldog) at The Dispersal of Darwin on February 16. See you there!