From Chapter 2:
The properly accomplished gallant not only professed to be curiously learned in pipes and tobacco, but his knowledge of prices and their fluctuations, of the apothecaries' and other shops where the herb was sold, and of the latest and most fashionable ways of inhaling and exhaling the smoke, was, like Mr. Weller's knowledge of London, "extensive and peculiar." It was knowledge of this kind that gained for a gallant reputation and respect by no means to be acquired by mere scholarship and learning.

From Chapter 7:
The examples and illustrations which have been given so far in this chapter relate to tradesmen and merchants, country gentlemen and the clergy. Other professional men smoked—we read in Fielding's "Amelia" of a doctor who in the evening "smoked his pillow-pipe, as the phrase is"—and among the rest of the people of equal or lower social standing smoking was as generally practised as in the preceding century. Handel, I may note, enjoyed his pipe. Dr. Burney, when a schoolboy at Chester, was "extremely curious to see so extraordinary a man," so when Handel went through that city in 1741 on his way to Ireland, young Burney "watched him narrowly as long as he remained in Chester," and among other things, had the felicity of seeing the great man "smoke a pipe, over a dish of coffee, at the Exchange Coffee-house," which was under the old Town Hall that stood opposite the present King's School, and in front of the present Town Hall.

Gonzales, in his "Voyage to Great Britain," 1731, says that the use of tobacco was "very universal, and indeed not improper for so moist a climate." He tells us that though the taverns were very numerous yet the ale-houses were much more so. These ale-houses were visited by the inferior tradesmen, mechanics, journeymen, porters, coachmen, carmen, servants, and others whose pockets were not equal to the price of a glass of wine, which, apparently, was the more usual thing to call for at a tavern, properly so called. In the ale-house men of the various classes and occupations enumerated, says the traveller, would "sit promiscuously in common dirty rooms, with large fires, and clouds of tobacco, where one that is not used to them can scarce breathe or see."