This late 18th Century Coffee House society provided a group of natural philosophers with the opportunity to discuss the topics that most interested them. Though the Minute books deal with some practical and procedural matters, they mostly record the discussions, which centred around chemistry, and in particular the phlogiston theory. Contemporary accounts of such meetings are extremely rare, and the survival of the manuscript copy, made by William Nicholson, a member and secretary of the society is remarkable. In this book, the original has been reproduced. The editors also include an account of the membership, 55 in number and of whom 33 were Fellows of the Royal Society of London, and background essays by Jan Golinski and Larry Stewart. Many of the members were medical, and some were lawyers and clergymen, but all shared a fascination for practical science and technology. Readers across a broad range of disciplines will find the book of great interest.