Note 1 — Chapter I

The journal, too, edited by Thomson is called 'Annals of Philosophy; or, Magazine of Chemistry, Mineralogy, Mechanics, Natural History, Agriculture, and Arts.' We can easily guess from the title what sort of subjects are here to be understood under the term 'philosophy.' Among the advertisements of books just published, I lately found the following notice in an English newspaper: 'The Art of Preserving the Hair, on Philosophical Principles, neatly printed in post 8vo, price seven shillings.' By philosophical principles for the preservation of the hair are probably meant chemical or physiological principles.