From Chapter 3:
The druggists and other tradesmen who sold tobacco in Elizabethan and Jacobean days had every provision for the convenience of their numerous customers. Some so-called druggists, it may be shrewdly suspected, did much more business in tobacco than they did in drugs. Dekker tells us of an apothecary and his wife who had no customers resorting to their shop "for any phisicall stuffe," but whose shop had many frequenters in the shape of gentlemen who "came to take their pipes of the divine smoake." That tobacco was often the most profitable part of a druggist's stock is also clear from the last sentence in Bishop Earle's character of "A Tobacco-Seller," one of the shortest in that remarkable collection of "Characters" which the Bishop issued in 1628 under the title of "Micro-Cosmographie."

From Chapter 8:
More than one writer of recent days has absurdly misrepresented Johnson as a smoker. The author of a book on tobacco published a few years ago wrote—"Dr. Johnson smoked like a furnace"—a grotesquely untrue statement—and "all his friends, Goldsmith, Reynolds, Garrick, were his companions in tobacco-worship." Reynolds, we know—

When they talk'd of their Raphaels, Corregios, and stuff,
He shifted his trumpet, and only took snuff.

Johnson and all his company took snuff, as every one in the fashionable world, and a great many others outside that charmed circle, did; but Johnson did not smoke, and I doubt whether any of the others did.