In the eighteenth century, druggists, chemists, and apothecaries began producing medicines in larger quantities for sale in a variety of markets, resulting in a more coherent manufacturing sector in Britain. Making medicines at such scale typically involved labor-intensive chemical processes occurring in laboratories that resembled other early industrial spaces as sites of work. We can catch a glimpse of these spaces in images like the frontispiece of the chemist Francis Spilsbury’s Friendly Physician (1773) where two figures toil with mortars, stills, and other instruments in the background, separated from the well-organized shop in the image’s foreground. A variety of business records from period pharmacies, including wage books, inventories, and recipes, enable us to uncover a little more about those indistinct figures bent over their work.
The increasing concentration of labor and capital in London’s medical marketplace encouraged men and women to set up laboratories, big and small, around the city, as seen in contemporary fire insurance policies. These laboratories were no longer artisanal workshops, though also not yet the steam-powered production lines of the nineteenth century. Alchemical techniques formerly applied to the transmutation of metals found use in the production of medicines in these spaces, such as the chemical laboratory depicted in William Lewis’s Philosophical Commerce of Arts (1763). They could contain machinery for grinding, pounding, and sifting drugs (the raw materials for compound medicines), as well as high-pressure boilers and furnaces for distillation and drying. Open fires were common beneath hundred-gallon stills, evaporating pans, condensers, copper boilers, and stoves. If temperatures went unmanaged, ingredients could burn, ruining a preparation; even worse, stills could boil over or even explode. Manufacturing medicines with this equipment required significant inputs of energy, increasingly supplied by waged labor forces during the eighteenth century.
Some traces of their daily routines can be found in recipe books from Corbyn & Company, one of the highest volume producers and distributors of medicine in London at the time. A recipe for flower of benzoin (benzoic acid, a topical antiseptic also used for a variety of internal matters) from the 1760s, for example, evokes the work of pharmacy. To start the process, several hundredweight of gum benzoin, a fragrant resin from the benjamin tree of Sumatra and Java, had to be purchased at auction and carted to the partnership’s laboratory at Cold Bath Fields where it would be pressed and milled, requiring several days, multiple men, and lots of charcoal. These manipulations were followed by 50 days purifying the resin through distillation (called rectifying). All in all, Thomas Corbyn estimated that the production of benzoin took 63 days and cost about 2 shillings per day for the work, which also included cleaning the distillation equipment, wear and tear of the machinery, and extra expenses (such as 8 weeks of beer for the workers costing 18 pence per week). These costs, nevertheless, remained relatively minor compared to the sometimes quite significant costs of raw materials, thus incentivizing production at scale.
Corbyn & Co. shipped much of the medicine they produced, such as the hard-pressed flower of benzoin, to the overseas markets provided by imperial institutions, such as the Royal Navy, East India Company, transatlantic slave trade, and Caribbean plantations. With increasing demand at home and aboard, political support, and capitalization, London’s pharmacies kept growing in the early nineteenth century, with some of them providing the seeds of several of today’s major pharma firms.
It can be surprisingly easy to miss the labor in London’s laboratories that underwrote the expanding production of medicines in eighteenth-century London. A chemist’s or druggist’s work area has received far less attention in histories of capitalism or industry than the cotton mill, for example. Recipes and other business records from London’s pharmacies, however, offer an opportunity to begin reconstructing the rhythms of work in these spaces and reintegrate them into studies of economy, labor, and health.
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