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:
The antiquary Hearne has left on record an account of a curious smoking match held at Oxford in 1723. It began at two o'clock in the afternoon of September 4 on a scaffold specially erected for the purpose "over against the Theatre in Oxford ... just at Finmore's, an alehouse." The conditions were that any one (man or woman) who could smoke out three ounces of tobacco first, without drinking or going off the stage, should have 12s. "Many tryed," continues Hearne, "and 'twas thought that a journeyman taylour of St. Peter's in the East would have been victor, he smoking faster than, and being many pipes before, the rest: but at last he was so sick, that 'twas thought he would have dyed; and an old man, that had been a souldier, and smoaked gently, came off conqueror, smoaking the three ounces quite out, and he told one (from whom I had it) that, after it, he smoaked 4 or 5 pipes the same evening." The old soldier was a well-seasoned veteran.