From Chapter 4:
On weekdays many New England Puritans probably smoked as their friends in old England did. A contemporary painting of a group of Puritan divines over the mantelpiece of Parson Lowell, of Newbury, shows them well provided with punch-bowl and drinking-cups, tobacco and pipes. One parson, the Rev. Mr. Bradstreet, of the First Church of Charlestown, was very unconventional in his attire. He seldom wore a coat, "but generally appeared in a plaid gown, and was always seen with a pipe in his mouth." John Eliot, the noble preacher and missionary to the Indians, warmly denounced both the wearing of wigs and the smoking of tobacco. But his denunciations were ineffectual in both matters—heads continued to be adorned with curls of foreign growth, and pipe-smoke continued to ascend.

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.