From Chapter 3:
It is uncertain when licences were first issued for the sale of tobacco. Probably they were issued in London some time before it was considered necessary to license dealers in other parts of the country. Among the Municipal Records of Exeter is the following note: "358. Whitehall, 31 August 1633. The Lords of the Council to the Chamber. 'Whereas his Ma^tie to prevent the excesse of the use of tobacco, and to set an order to those that regrate and sell or utter it by retayle, who observe noe reasonable rates or prizes [prices], nor take care that it be wholsome for men's bodyes that shall use it,' has caused letters to be sent to the chief Officers of Citties and towns requiring them to certify 'in what places it might be fitt to suffer ye retayleing of tobacco and how many be licenced in each of those places to use trade'; and the City of Exeter having made a return the Lords sent a list of those which are to be licensed, and order that no others be permitted to sell."

From Chapter 8:
smoking had certainly not died out at Cambridge, even at the time when Denison was at Oxford. According to the "Gradus ad Cantabrigium," 1824, the Cambridge smart man's habit was to dine in the evening "at his own rooms, or at those of a friend, and afterwards blows a cloud, puffs at a segar, and drinks copiously." The spelling of "segar" shows that cigars were then somewhat of a novelty.