But, besides the society of these men of wit and pleasure, Dryden enjoyed the affection and esteem of the ingenious Cowley, who wasted his brilliant talents in the unprofitable paths of metaphysical poetry; of Waller and of Denham, who had done so much for English versification; of Davenant, as subtle as Cowley, and more harmonious than Denham, who, with a happier model, would probably have excelled both. Dryden was also known to Milton, though it may be doubted whether they justly appreciated the talents of each other. Of all the men of genius at this period, whose claims to immortality our age has admitted, Butler alone seems to have been the adversary of our author's reputation.[28] While Dryden was thus generally known and admired, the advancement of his fortune bore no equal progress to the splendour of his literary fame. Something was, however, done to assist it. The office of royal historiographer had become vacant in 1666 by the decease of James Howell, and in 1668 the death of Davenant opened the situation of poet-laureate. These two offices, with a salary of £200 paid quarterly, and the celebrated annual butt of canary, were conferred upon Dryden 18th August 1670.[29] The grant bore a retrospect to the term after Davenant's demise, and is declared to be to "John Dryden, master of arts, in consideration of his many acceptable services theretofore done to his present Majesty, and from an observation of his learning and eminent abilities, and his great skill and elegant style, both in verse and prose."[30] Thus was our author placed at the head of the literary class of his countrymen, so far as that high station could be conferred by the favour of the monarch.