From Chapter 1:
In the Wallace Collection at Hertford House is a pouch or case labelled as having belonged to and been used by Sir Walter Raleigh. This pouch contains several clay pipes. It was perhaps this same pouch or case which once upon a time figured in Ralph Thoresby's museum at Leeds, and is described by Thoresby himself in his "Ducatus Leodiensis," 1715. Curiously enough, a few years ago when excavations were being made around the foundations of Raleigh's house at Youghal a clay pipe-bowl was dug up which in size, shape, &c., was exactly like the pipes in the Wallace exhibit. Raleigh lived and no doubt smoked in the Youghal house, so it is quite possible that the bowl found belonged to one of the pipes actually smoked by him. In the garden of the Youghal house, by the way, they used to show the tree—perhaps still do so—under which Raleigh was sitting, smoking his pipe, when his servant drenched him. Thus the tradition, which, as we have seen, dates from 1708 only, has obtained two local habitations—Youghal and Durham House on the Adelphi site.

From Chapter 5:
When plague was abroad even children were compelled to smoke. At the time of the dreadful visitation of 1665 all the boys at Eton were obliged to smoke in school every morning. One of these juvenile smokers, a certain Tom Rogers, years afterwards declared to Hearne, the Oxford antiquary, that he never was whipped so much in his life as he was one morning for not smoking. Times have changed at Eton since this anti-tobacconist martyr received his whipping. It is sometimes stated that at this time smoking was generally practised in schools, and that at a stated hour each morning lessons were laid aside, and masters and scholars alike produced their pipes and proceeded to smoke tobacco. But I know of no authority for this wider statement; it seems to have grown out of Hearne's record of the practice at Eton.