From Chapter 8:
More than one writer of recent days has absurdly misrepresented Johnson as a smoker. The author of a book on tobacco published a few years ago wrote—"Dr. Johnson smoked like a furnace"—a grotesquely untrue statement—and "all his friends, Goldsmith, Reynolds, Garrick, were his companions in tobacco-worship." Reynolds, we know—

When they talk'd of their Raphaels, Corregios, and stuff,
He shifted his trumpet, and only took snuff.

Johnson and all his company took snuff, as every one in the fashionable world, and a great many others outside that charmed circle, did; but Johnson did not smoke, and I doubt whether any of the others did.

From Chapter 6:
There was clearly no prejudice against smoking at Cambridge. Abraham de la Pryme notes in his diary for the year 1694 that when it was rumoured in May of that year that a certain house opposite one of the colleges was haunted, strange noises being heard in it, several scholars of the college said, "Come, fetch us a good pitcher of ale, and tobacco and pipes, and wee'l sit up and see this spirit." The ale was duly provided, the pipes were lit, and the courageous smokers spent the night in the house, sitting "singing and drinking there till morning," but, alas! they neither saw nor heard anything.

From Chapter 1:
At the fifteenth-century Manor-House at South Wraxall, Wiltshire, the "Raleigh Room" is shown, and visitors are told that according to local tradition it was in this room that Sir Walter smoked his first pipe, when visiting his friend, the owner of the mansion, Sir Henry Long.

From Chapter 6:
Sir Roger de Coverley, as a typical country squire, was naturally a smoker. He presented his friend the Spectator, the silent gentleman, with a tobacco-stopper made by Will Wimble, telling him that Will had been busy all the early part of the winter in turning great quantities of them, and had made a present of one to every gentleman in the county who had good principles and smoked. When Sir Roger was driving in a hackney-coach he called upon the coachman to stop, and when the man came to the window asked him if he smoked. While Sir Roger's companion was wondering "what this would end in," the knight bid his Jehu to "stop by the way at any good Tobacconist's, and take in a Roll of their best Virginia." And when he visited Squire's near Gray's Inn Gate, his first act was to call for a clean pipe, a paper of tobacco, a dish of coffee, a newspaper and a wax candle; and all the boys in the coffee-room ran to serve him. The wax candle was of course a convenience in matchless days for pipe-lighting. The "paper of tobacco" was the equivalent of what is now vulgarly called a "screw" of tobacco.