From Chapter 1:
The form and make of the first pipe is a matter I do not propose to go into here; but in connexion with the first pipe smoked in this country Aubrey's interesting statements must be given. Writing in the time of Charles II, he said that he had heard his grandfather say that at first one pipe was handed from man to man round about the table. "They had first silver pipes; the ordinary sort made use of a walnut shell and a straw"—surely a very unsatisfactory pipe. Tobacco in those earliest days, he says, was sold for its weight in silver. "I have heard some of our old yeomen neighbours say that when they went to Malmesbury or Chippenham Market, they culled out their biggest shillings to lay in the scales against the tobacco."

From Chapter 8:
All's well that ends well; but one cannot help wondering what kind of tobacco it was that the Birmingham tradesman used, a half pipeful of which had such a deadly effect—but perhaps the effect was due to the salt, not to the tobacco.
In the year after that which witnessed Coleridge's adventure, i.e. in 1796, a tobacco-box with a history was the subject of a legal decision. This box, made of common horn and small enough to be carried in the pocket, was bought for fourpence by an overseer of the poor in the time of Queen Anne, and was presented by him in 1713 to the Society of Past Overseers of the parish of St. Margaret, Westminster. In 1720 the Society, in memory of the donor, ornamented the lid with a silver rim; and at intervals thereafter additions were made to an extraordinary extent to the box and its casings. Hogarth engraved within the lid in 1746 a bust of the victor of Culloden. Gradually the horn box was enshrined within one case after another—usually silver lined with velvet—each case bearing inscribed plates commemorating persons or events. A Past Overseer who detained the box in 1793 had to give it back after three years of litigation. A case of octagon shape records the triumph of Justice, and Lord Chancellor Loughborough pronouncing his decree for the restitution of the box on March 5, 1796. In later days many and various additions have been made to the many coverings of the box, recording public events of interest.