From Chapter 2:
smoking was not confined to the auditors on the stage, who paid sixpence each for a stool. There was the "lords' room" over the stage, which seems to have corresponded with the modern stage boxes, the price of admission to which appears to have been a shilling, where the pipe was also in full blast. Dekker tells how a gallant at a new play would take a place in the "twelve penny room, next the stage, because the lords and you may seem to be hail fellow, well met"; and Jonson, in "Every Man out of his Humour," 1600, speaks of one who pretended familiarity with courtiers, that he talked of them as if he had "taken tobacco with them over the stage, in the lords' room."

From Chapter 8:
A famous crony of Parr's, the learned Porson, was another devotee of tobacco. In November 1789 Parr wrote to Dr. Burney: "The books may be consulted, and Porson shall do it, and he will do it. I know his price when he bargains with me; two bottles instead of one, six pipes instead of two, burgundy instead of claret, liberty to sit till five in the morning instead of sneaking into bed at one: these are his terms:" and these few lines, it may be added, give a graphic picture of Porson. According to Maltby, Porson once remarked that when smoking began to go out of fashion, learning began to go out of fashion also—which shows what nonsense a learned man could talk.