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:
The attractions and the atmosphere of provincial coffee-houses were much the same as those of the London resorts. A German gentleman who visited Cambridge in July and August 1710 remarked that in the Greeks' coffee-house in that town, in the morning and after 3 o'clock in the afternoon, you could meet the chief professors and doctors, who read the papers over a cup of coffee and a pipe of tobacco. One of the learned doctors took the German visitor to the weekly meeting of a Music Club in one of the colleges. Here were assembled bachelors, masters and doctors of music of the University—no professionals were employed—who performed vocal and instrumental music to their mutual gratification, though, apparently, not to the satisfaction of the visitor, who records his opinion that the music was "very poor." "It lasted," he says, "till 11 P.M., there was besides smoking and drinking of wine, though we did not do much of either. At 11 the reckoning was called for, and each person paid 2s."