From Chapter 4:
In this country tobacco is said to have invaded even the House of Commons itself. Mr. J.H. Burn, in his "Descriptive Catalogue of London Tokens," writes: "About the middle of the seventeenth century it was ordered: That no member of the House do presume to smoke tobacco in the gallery or at the table of the House sitting as Committees." I do not know what the authority for this order may be, but there is no doubt that smoking was practised in the precincts of the House. In "Mercurius Pragmaticus," December 19-26, 1648, the writer says on December 20, speaking of the excluded members: "Col. Pride standing sentinell at the door, denyed entrance, and caused them to retreat into the Lobby where they used to drink ale and tobacco."

From Chapter 6:
Other well-known men of the late seventeenth century were "tobacconists" in the old sense of the word. Sir Isaac Newton is said to have smoked immoderately; and a familiar anecdote represents him as using for the purposes of a tobacco-stopper, in a fit of absent-mindedness, the little finger of a lady sitting beside him, whom he admired, but the truth of this legend is open to doubt. Thomas Hobbes, who lived to be ninety (1588-1679), was accustomed to dine at 11 o'clock, after which he smoked a pipe and then lay down and took a nap of about half an hour. No doubt he would have attributed the length of his days to the regularity of his habits. Izaak Walton, who also lived to be ninety, as the lover of the placid and contemplative life deserved to do, loved his pipe, though he seldom mentions smoking in the "Compleat Angler." Sir Samuel Garth, poet and physician, once known to fame as the author of "The Dispensary," was another pipe-lover, as is shown by his verses quoted at the head of this chapter. Dudley, the fourth Lord North, began to smoke in 1657, and, says Dr. Jessopp, "the habit grew upon him, the frequent entries for pipes and tobacco showing that he became more and more addicted to this indulgence. Probably it afforded him some solace in the dreadful malady from which he suffered so long."