From Chapter 3:
One result of the herb's popularity was found in frequent attempts by tradesmen of various kinds to sell it without being duly licensed to do so. Mr. W.G. Bell, in his valuable book on "Fleet Street in Seven Centuries," mentions the arrest of a Fleet Street grocer by the Star Chamber for unlicensed trading in tobacco. He also quotes from the St. Dunstan's Wardmote Register of 1630 several cases of complaint against unlicensed traders and others. Four men were presented "for selling ale and tobacco unlicensed, and for annoying the Judges of Serjeants Inn whose chambers are near adjoyning." Two other men, one of them hailing from the notorious Ram Alley, were presented "for annoying the Judges at Serjeants Inn with the stench and smell of their tobacco," which looks as if the Judges were of King James's mind about smoking. The same Register of 1630 records the presentment of two men of the same family name—Thomas Bouringe and Philip Bouringe—"for keeping open their shops and selling tobacco at unlawful hours, and having disorderly people in their house to the great disturbance of all the inhabitants and neighbours near adjoining." The Ram Alley, Fleet Street, mentioned above, was notorious in sundry ways. Mr. Bell mentions that in 1618 the wardmote laid complaint against Timothy Louse and John Barker, of Ram Alley, "for keeping their tobacco-shoppes open all night and fyers in the same without any chimney and suffering hot waters [spirits] and selling also without licence, to the great disquietness and annoyance of that neighbourhood." There were sad goings on of many kinds in Ram Alley.

From Chapter 8:
The allusion in these verses to a "satiric wipe" refers to a passage in the poem entitled "Conversation," which Cowper had written in the previous year, 1781. In this passage tobacco is abused in terms which Cowper clearly felt to need modification after his personal intercourse with such a smoker as his friend Bull. In describing, in "Conversation," the manner in which a story is sometimes told, the poet says:

The pipe, with solemn interposing puff,
Makes half a sentence at a time enough;
The dozing sages drop the drowsy strain,
Then pause and puff—and speak, and pause again.
Such often, like the tube they so admire,
Important triflers! have more smoke than fire.