From Chapter 3:
Taking tobacco was clearly an accomplishment to be studied seriously. Shift, a professor of the art in Jonson's play, puts up a bill in St. Paul's—the recognized centre for advertisements and commercial business of every kind—in which he offers to teach any young gentleman newly come into his inheritance, who wishes to be as exactly qualified as the best of the ordinary-hunting gallants are—"to entertain the most gentlemanlike use of tobacco; as first, to give it the most exquisite perfume; then to know all the delicate sweet forms for the assumption of it; as also the rare corollary and practice of the Cuban ebolition, euripus and whiff, which he shall receive, or take in here at London, and evaporate at Uxbridge, or farther, if it please him."

From Chapter 8:
In the whole sixteen volumes of Walpole's correspondence, as so admirably edited by Mrs. Toynbee, there is scarcely a mention of tobacco; and the same may be said of other collections of letters of the same period—the Selwyn letters, the Delany correspondence, and so on. Neither Walpole nor any member of the world in which he lived would appear to have smoked. In Miss Burney's "Evelina," 1778, from the beginning to the end of the book there is no mention whatever of tobacco or of smoking. Apparently the vulgar Branghtons were not vulgar enough to smoke. Such use of tobacco was considered low, and was confined to the classes of society indicated in the preceding chapter. One of the characters in Macklin's "Love à la Mode," 1760, is described as "dull, dull as an alderman, after six pounds of turtle, four bottles of port, and twelve pipes of tobacco."