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 6:
Even children seem to have smoked sometimes in the coffee-houses. Ralph Thoresby, the Leeds antiquary, tells a strange story. He declares that, one evening which he spent with his brother at Garraway's Coffee-house, February 20, 1702, he was surprised to see his brother's "sickly child of three years old fill its pipe of tobacco and smoke it as audfarandly as a man of three score; after that a second and a third pipe without the least concern, as it is said to have done above a year ago." A child of two years of age smoking three pipes in succession is a picture a little difficult to accept as true. As this is the only reference to tobacco in the whole of his "Diary," it is not likely that Thoresby was himself a smoker.