From Chapter 2:
Ben Jonson has given us an amusing picture of the behaviour of gallants on the Elizabethan stage, in his "Cynthia's Revels." In this scene a child thus mimics the obtrusive beau: "Now, sir, suppose I am one of your genteel auditors, that am come in (having paid my money at the door, with much ado), and here I take my place, and sit downe. I have my three sorts of tobacco in my pocket, my light by me, and thus I begin. 'By this light, I wonder that any man is so mad, to come to see these rascally tits play here—they do act like so many wrens—not the fifth part of a good face amongst them all—and then their musick is abominable—able to stretch a man's ears worse than ten—pillories, and their ditties—most lamentable things, like the pitiful fellows that make them—poets. By this vapour—an't were not for tobacco—I think—the very smell of them would poison me, I should not dare to come in at their gates. A man were better visit fifteen jails—or a dozen or two hospitals—than once adventure to come near them.'" And the young rascal, who at each pause marked by a dash had puffed his pipe, no doubt blowing an extra large "cloud" when he swore "by this vapour," turns to his companions and says: "How is't? Well?" and they pronounce his mimicry "Excellent!"

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.