From Chapter 2:
In the afternoon the gallant might attend what Dekker calls a "Tobacco-ordinary," by which may possibly have been meant a smoking-club, or, more probably, the gathering after dinner at one of the many ordinaries in the neighbourhood of St. Paul's Cathedral of "tobacconists," as smokers were then called, to discuss the merits of their respective pipes, and of the various kinds of tobacco—"whether your Cane or your Pudding be sweetest."

Of course he often bragged, like Julio in Day's "Law Trickes": "Tobacco? the best in Europe, 't cost me ten Crownes an ounce, by this vapour."

From Chapter 8:
If smoking had died out at Oxford its decline must have been rapid. When a certain young John James was an undergraduate of Queen's, 1778 to 1781, he and his correspondents spoke severely of the "miserable condition of Fellows who (under the liberal pretence of educating youth) spend half their lives in smoking tobacco and reading the newspapers." About 1800 the older or more old-fashioned of the Fellows at New College, "not liking the then newly introduced luxury of Turkey carpets," says Mr. G.V. Cox, in his "Recollections of Oxford," 1868, "often adjourned to smoke their pipe in a little room opposite to the Senior Common-room, now appropriated to other uses, but then kept as a smoking-room." A Mr. Rhodes, a one-time Fellow of Worcester College, who was elected Esquire Bedel in Medicine and Arts in 1792, had a very peculiar way of enjoying his tobacco. Mr. Cox says: "On one occasion, when I had to call upon him, I found him drinking rum and water, and enjoying (what he called his luxury) the fumes of tobacco, not through a pipe or in the shape of a cigar, but burnt in a dish!"