From Chapter 2:
When Robert, Earl of Essex, and Henry, Earl of Southampton, were tried for high treason in Westminster Hall on February 19, 1600-1, the members of the House of Lords, who with the Judges formed the Court, if we may believe the French Ambassador of the time, behaved in a remarkable and unseemly manner. In a letter to Monsieur de Rohan, the Ambassador declared that while the Earls and the Counsel were pleading, their lordships guzzled and smoked; and that when they gave their votes condemning the two Earls, they were stupid with eating and "yvres de tabac"—drunk with smoking. This was probably quite untrue as a representation of what actually took place; but it would hardly have been written had smoking not been a common practice among noble lords.

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."