In April, 1828, Swainson published an eulogistic account of some of Audubon's plates, and shortly after they became good friends, as their familiar letters already reproduced amply testify;[88] in the autumn of that year, as we have related, they visited Paris together, and they kept up a correspondence for a number of years. At this time Swainson was known as a systematic zoölogist of merit and an excellent draughtsman, having published a series of "Zoölogical Illustrations" that seem to have been well received. Moreover, as early as 1824, he had adopted the notorious "Circular System" of the classification of animals, and at this time was its most zealous advocate in England. The tenets of this curious doctrine, often called "Quinarianism" from the recurrence of the number 5, was confused in a mystical jargon which conveys little meaning to a reader of today; it was derived from William Sharp MacLeay, who had advocated a similar system in his Horae Entomologicae, published in 1821. According to Swainson's creed, "all things that have life have been created upon one plan, and this plan is founded on the principle of a series of affinities returning into themselves; which can only be represented by a circle." "This sublime discovery," which, as Swainson thought, was sufficient "to immortalize a name," was duly attributed to his "illustrious countryman."[89]

In the summer of 1830, when Audubon was ready to prepare the letterpress of his mammoth plates and needed assistance in its technical details, he applied to his friend Swainson, who, as we have seen, was then living at a farmstead in the Hertfordshire country, not far from St. Albans.[90] Some of the letters which passed between the two naturalists after the return of the former to England, in the spring of that year, will now be given, without amelioration or change of any sort. It should be remembered that Swainson at this time was in an overwrought state, since he was dependent mainly upon his scientific writings for the support of a family of five children, oppressed by pecuniary difficulties, and, no doubt, irritated by lack of success and the rebuffs which a leading part in the Quinarian movement was certain to entail. Audubon's letter[91] which follows served to answer that of Swainson, bearing date of January 30, 1830,[92] had been received in America but too late for the fulfillment of its commissions. References to Audubon's "book," which unfortunately proved a stumbling block in the path of friendship, are noticed here and in Swainson's reply for the first time.

Audubon to William Swainson

London, May 5th 1830.

My Dear Mr. Swainson,

You may be assured that nothing but an over [word undecipherable] or [another similar word] has stopt me from writing to you sooner, Yet I would have had the pleasure of announcing you my return to good old England had I not been informed by Mr. Havell that you we apraised of it when last in town & that more over you were quite well.—I hope that your kind wife and children are equally so and happy.—I brought my good wife with me to Liverpool where she is for a while with her sister Mrs. Gordon & the family Rathbourn. We had a rough voyage of 25 days & glad to be back on this hospitable shore. I am sorry to say that your last letter to me (I presume) did not reach me in time to enable me to procure either squirrels or birds for you.—I have indeed brought about 150 birds and some of them good singers and beautifull but all are on Double Elephant Paper—they may and I hope they will please your eyes, when I have the satisfaction to shake you by the hand the first time you come to town.—I called on Mr. Lea at Philadelphia, but he told me that you had countermanded your wishes to me & has given me a memorandum to that effect—Mr. Gilpin on whom I also called told me that your travelling boxes had forwardd. I saw Mr. Ward at New York he is doing extremely well if what he told me is true. I saw M. le Comte also.—I have just taken the Reins of my Mammoth Publication which by the way I am glad to find in a good way of process or progress. I am greatly indebted to Mr. Children and grateful to him—Havell has done his part I think well and now I will set about procuring subscriptions with new ardour. Now in return of this packet of information I am very desirous to know what you are engaged at present in the way of science; I feel as if I had a world of talk for you.—Bonaparte's 4th volume is printing have you seen the third? I have it at Liverpool by this time.—I wrote to the author this morning.—I am well pleased with my voyage I think it will be of material advantage to my work my health & my comfort—We have left our two sons quite well and doing well at the Falls of the Ohio where I killed a fine Turkey about forty days since. Those sent to the Zoological Gardens alive have had ill luck. They received only one and 3 Oppossums—The blue Gias [?] and Parakets are not yet arrived, and Mr. Rathbone as well as Mr. Shepherd told me (to my great sorrow) that the last shipment of 10,000 forest trees were all dead. How did those sent to you?—I have commenced the having a complete collection of the Birds of America in skins & have instituted some agents in the U. S. to provide for me. So much have I seen of those dear creatures of the feathered creation that I feel even now as if I heard their notes and saw their all elegant movements.—I am going to write a book! but more of this when we meet.—do you know that the poor woodsman who now is scribling to you will take his seat at the Royal Society of London tomorrow—the very words make my head whirl and I will stand it I do not know—I will indeed be glad when I am seated.—Mrs A and myself had the pleasure of being very kindly received and treated by our President Jackson Congress subscribed, I procured there four more and an act will be passed to enter my works Paintings etc free of the customs.—It is past 5 and I have to pay a penny, I wish I were allowed to write untill time made it a shilling so much do I think I could still trouble you with, however as time and tide wait neither for me or others I must conclude by begging that you will remember me most kindly to your amiable wife—kiss your little Folk and believe me

sincerely your friend
John J. Audubon

William Swainson to Audubon

Saturday, 1[10?] May, 1830.

Welcome once more, my good friend to merry England: