From Chapter 1:
The form and make of the first pipe is a matter I do not propose to go into here; but in connexion with the first pipe smoked in this country Aubrey's interesting statements must be given. Writing in the time of Charles II, he said that he had heard his grandfather say that at first one pipe was handed from man to man round about the table. "They had first silver pipes; the ordinary sort made use of a walnut shell and a straw"—surely a very unsatisfactory pipe. Tobacco in those earliest days, he says, was sold for its weight in silver. "I have heard some of our old yeomen neighbours say that when they went to Malmesbury or Chippenham Market, they culled out their biggest shillings to lay in the scales against the tobacco."

From Chapter 8:
There is ample evidence, apart from Johnson's dictum, that in the latter part of the eighteenth century smoking had "gone out." In Mrs. Climenson's "Passages from the Diaries of Mrs. Lybbe Powys," we hear of a bundle of papers at Hardwick House, near Whitchurch, Oxon, which bears the unvarnished title "Dick's Debts." This Dick was a Captain Richard Powys who had a commission in the Guards, and died at the early age of twenty-six in the year 1768. This list of debts, it appears, gives "the most complete catalogue of the expenses of a dandy of the Court of George II, consisting chiefly of swords, buckles, lace, Valenciennes and point d'Espagne, gold and amber-headed canes, tavern bills and chair hire." But in all the ample detail of Captain Powys's list of extravagances there is nothing directly or indirectly relating to smoking. The beaux of the time did not smoke.