Bonaparte was too much of a man of the world to permit such an incident to cause any sudden break in their relations. We know that they met in London in 1837, when, as Audubon said in a later letter to Harris[112] he "pumped him sadly too much"; at his request Bonaparte then drew up a list of American birds, to the number of 425.[113] Although his subscription to _The Birds of America_ was permitted to lapse, Bonaparte's name was retained on the list to the end. When the business was being closed up in London, however, Audubon wrote to Havell, from Edinburgh, under date of 15 May, 1839: "As respects my _old_ Friend, C. Bonaparte, _unless_ he pays the long standing balance which he owes me of £8.18.6, and also the price of the set of Nos. 81-87, _on the nail_, he is not to receive the latter." Again on the thirtieth of June he wrote: "I have no numbers for Charles Bonaparte, and no 5th. vol. of Biog. for Mr. Gould; let the Gentlemen purchase or procure what they want where they can." In 1838 Bonaparte published a paper[114] in which appeared this comment: Throughout the list I have quoted, as types of the species under consideration, the figures of the great works of Mr. John Gould and Mr. Audubon on the Ornithology of the two regions, as they must be considered the standard works of the subject. The merit of Mr. Audubon's work yields only to the size of his book; while Mr. Gould's work on the _Birds of Europe_ though inferior in size to that of Mr. Audubon—is the most beautiful work that has ever appeared in this or any other country. A reviewer in America,[115] who could not repress his resentment at the last remark, said: "It would be invidious to make any comment on this—to even insinuate a wonder that a personage bearing this world renowned name would consent to resign his reputation as a man of science, through all time, to the doubtful association of such an expression of mere professional spite." John Gould, to whom Bonaparte referred, was perhaps the only ornithologist who ever grew rich at his profession. He was the author of forty large, illustrated folios, produced at the rate of about one a year, on the birds of Great Britain, Europe, Asia, and Australia, as well as those of numerous families of the tropical Orient. Audubon, in response to Bachman, thus referred to him when writing in London, April 30, 1835: "Gould is a man of great industry and has the advantage of the Zoölogical Society, museums, gardens, &c., and is in correspondence with Temminck, Jardine, Selby, James Wilson and the rest of the scientific gentry. His wife makes his drawings on stone. She is a plain, fine woman, and although their works are not quite up to nature, both deserve great credit."