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 6:
Thackeray pictures Dryden as sitting in his great chair at Will's Coffee-house, Russell Street, Covent Garden, tobacco-pipe in hand; but there is no evidence that Dryden smoked. The snuff-box was his symbol of authority. Budding wits thought themselves highly distinguished if they could obtain the honour of being allowed to take a pinch from it. Of Dr. Aldrich, who was Dean of Christ Church, Oxford, and who wrote a curious "Catch not more difficult to sing than diverting to hear, to be sung by four men smoaking their pipes," an anecdote has often been related, which illustrates his devotion to the weed. A bet was made by one undergraduate and taken by another, that at whatever time, however early, the Dean might be visited in his own den, he would be found smoking. As soon as the bet had been made the Dean was visited. The pair explained the reason for their call, when Aldrich, who must have been a good-tempered man, said, "Your friend has lost: I am not smoking, only filling my pipe."