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 5:
smokers of the period were often curious in tobacco-boxes. Mr. Richard Stapley, gentleman, of Twineham, Sussex, whose diary is full of curious information, was presented in 1691 by his friend Mr. John Hill with a "tobacco-box made of tortoise." Seven years earlier Stapley had sold to Hill his silver tobacco-box for 10s. in cash—the rest of the value of the box, he noted, "I freely forgave him for writing at our first commission for me, and for copying of answers and ye like in our law concerns; so yt I reckon I have as good as 30s. for my box: 5s. he gave me, and 5s. more he promised to pay me ... and I had his steel box with the bargain, and full of smoake." Apparently Mr. Hill's secretarial labours were valued at 20s. This same Sussex squire bought a pound of tobacco in December 1685 for 20d., which seems decidedly cheap, and in the following year a 5 lb. box for 7s. 6d.—which was cheaper still.