From Chapter 3:
It is pretty clear that not a few of the druggists who sold tobacco were great rascals. Ben Jonson has let us into some of their secrets of adulteration—the treatment of the leaf with oil and the lees of sack, the increase of its weight by other artificial additions to its moisture, washing it in muscadel and grains, keeping it in greased leather and oiled rags buried in gravel under ground, and by like devices. Other writers speak of black spice, galanga, aqua vitæ, Spanish wine, aniseeds and other things as being used for purposes of adulteration.

From Chapter 8:
Parr was not a model smoker. He was brutally overbearing towards other folk, and would accept no invitation except on the understanding that he might smoke when and where he liked. It was his invariable practice, wherever he might be visiting, to smoke a pipe as soon as he had got out of bed. His biographer says—"The ladies were obliged to bear his tobacco, or to give up his company; and at Hatton (1786-1825) now and then he was the tyrant of the fireside." Parr was capable of smoking twenty pipes in an evening, and described himself as "rolling volcanic fumes of tobacco to the ceiling" while he worked at his desk. At a dinner which was given at Trinity College, Cambridge, to the Duke of Gloucester, as Chancellor of the University, when the cloth was removed, Parr at once started his pipe and began, says one who was present, "blowing a cloud into the faces of his neighbours, much to their annoyance, and causing royalty to sneeze by the stimulating stench of mundungus." It is surprising that people were willing to put up with such bad manners as Parr was accustomed to exhibit; but his reputation was then great, and he traded upon it.