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 5:
When plague was abroad even children were compelled to smoke. At the time of the dreadful visitation of 1665 all the boys at Eton were obliged to smoke in school every morning. One of these juvenile smokers, a certain Tom Rogers, years afterwards declared to Hearne, the Oxford antiquary, that he never was whipped so much in his life as he was one morning for not smoking. Times have changed at Eton since this anti-tobacconist martyr received his whipping. It is sometimes stated that at this time smoking was generally practised in schools, and that at a stated hour each morning lessons were laid aside, and masters and scholars alike produced their pipes and proceeded to smoke tobacco. But I know of no authority for this wider statement; it seems to have grown out of Hearne's record of the practice at Eton.