From Chapter 4:
There is a curious entry in Thomas Burton's diary of the proceedings of Cromwell's Parliament, which suggests that there may then have been the luxury of a members' smoking-room. Burton was a member of the Parliaments of Oliver and Richard Cromwell from 1656 to 1659, and made a practice—for which historical students have been and are much his debtors—of taking notes of the debates as he sat in the House. Members sometimes objected to and protested against this note-taking, but Burton quietly went on using his pencil, and though his summaries of speeches are often difficult to follow, argument and sense suffering by compression, he has preserved much very valuable matter. Referring to a debate on January 7, 1656-57, on an attempt to go behind the previously passed Act of Oblivion, the diarist records that "Sir John Reynolds had numbered the House, and said at rising there were 220 at the least, besides tobacconists." This can only mean that there were at least 220 members actually present in the House when it rose, not counting the "tobacconists" or smokers, who were enjoying their pipes, not in the Chamber itself, but in some conveniently adjoining place, which may have been a room for the purpose, or may simply have been the lobby referred to above in the extract from "Mercurius Pragmaticus."

From Chapter 8:
smoking was frowned upon, even in places where hitherto it had been allowed. In 1812 the authorities of Sion College ordered "that Coffee and Tea be provided in the Parlour for the Visitors and Incumbents, and in the Court Room for the Curates and Lecturers; and that Pipes and Tobacco be not allowed; and that no Wine be at any time carried into the Court Room, nor any into the Hall after Coffee and Tea shall have been ordered on that day."

The use of tobacco for smoking, as I have said, had reached its nadir—in the fashionable world, that is to say—but the dawn follows the darkest hour, and the revival of smoking was at hand, thanks to the cigar.