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."

From Chapter 14:
Readers of Sir Walter Scott will remember in "The Heart of Midlothian" one curious instance of eighteenth-century smoking in church—in a Scottish Presbyterian church, too. Jeanie Deans's beloved Reuben Butler was about to be ordained to the charge of the parish of Knocktarlitie, Dumbartonshire; the congregation were duly seated, after prayers, douce David Deans occupying a seat among the elders, and the officiating minister had read his text preparatory to the delivery of his hour and a quarter sermon. The redoubtable Duncan of Knockdunder was making his preparations also for the sermon. "After rummaging the leathern purse which hung in front of his petticoat, he produced a short tobacco-pipe made of iron, and observed almost aloud, 'I hae forgotten my spleuchan—Lachlan, gang doon to the Clachan, and bring me up a pennyworth of twist.' Six arms, the nearest within reach, presented, with an obedient start, as many tobacco-pouches to the man of office. He made choice of one with a nod of acknowledgment, filled his pipe, lighted it with the assistance of his pistol-flint, and smoked with infinite composure during the whole time of the sermon. When the discourse was finished, he knocked the ashes out of his pipe, replaced it in his sporran, returned the tobacco-pouch or spleuchan to its owner, and joined in the prayers with decency and attention." David Deans, however, did not at all approve this irreverence. "It didna become a wild Indian," he said, "much less a Christian and a gentleman, to sit in the kirk puffing tobacco-reek, as if he were in a change-house." The date of the incident was 1737; but whether Sir Walter had any authority in fact for this characteristic performance of Knockdunder, or not, it is certain that any such occurrence in a Scottish kirk must have been extremely rare.