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 7:
In Townley's well-known two-act farce "High Life Below Stairs," 1759, the servants take their masters' and mistresses' titles and ape their ways. The menservants—the Dukes and Sir Harrys—offer one another snuff. "Taste this snuff, Sir Harry," says the "Duke." "'Tis good rappee," replies "Sir Harry." "Right Strasburgh, I assure you, and of my own importing," says the knowing ducal valet. "The city people adulterate it so confoundedly," he continues, "that I always import my own snuff;" and in similar vein he goes on in imitation of his master, the genuine Duke. These servants copy the talk and style (with a difference) of their employers; but smoking is never mentioned. The real Dukes and Sir Harrys took snuff with a grace, but they did not do anything so low as to smoke, and their menservants faithfully aped their preferences and their aversions.