By the 15th of March Audubon was again in London, and on the 24th he started for Oxford. Dr. Williams, as he noted in his journal, subscribed for his _Birds_ in favor of the Radcliffe Library, as did also Dr. Kidd for the Anatomical School; but, though hospitably treated by all, not one of the twenty-four colleges of that great University emulated their example, and the naturalist went away disappointed. Upon his return to London in early April, Audubon received a call from John C. Loudon, editor of the _Magazine of Natural History_, and was invited to contribute to that journal. "I declined," he said, "for I will never write anything to call down upon me a second volley of abuse. I can only write _facts_, and when I write these, the Philadelphians call me a liar." He was then chafing under the criticism which his rattlesnake stories had produced.[352] On April 6 the persistent Mr. Loudon called again and offered Audubon eight guineas for an article, only to be again refused. Still unwilling to admit defeat, the editor proposed to engage William Swainson to prepare an extended review of the naturalist's work, and in this he succeeded so well that Audubon immediately relented and sent him a paper.[353] Swainson offered to write the review for a copy of the work at its cost price, and Audubon replied in the following letter:[354] _Audubon to William Swainson_ LONDON, _April 9th 1828_. MY DEAR SIR, Mr. Loudon called on me yesterday and showed me a letter from you to him, in which many very flattering expressions respecting myself and my works you are so kind as to offer to review the latter so as to have your opinion in writting in time for the first no. of the magazine that will appear next month.—you also desire that I should send you a sett of the works as far as publishing which you wish to keep provided I will let you have it at the price _it costs me._ I assure you my Dear Sir, that was I to take you at your word it would be a sore bargain for you as the a/m would be very nearly double that for which it is sold to my subscribers.—therefore you will permit me to alter your offer and to say that if it suits you to pay 35 shillings per number I will be contented; I would be still more so was I rich enough to present it to you.— It is the only set on hand at present except one which I must have to exhibit.— The answer respecting the Shrieke [Shrike] has I hope met with your wishes.— Ever since I became acquainted with our mutual friend Dr. Fraill [Traill] I have had a great desire to see and speak to you & I regret that I never have had an opportunity. My time is so completely taken up that it is with difficulty that I can enjoy a day's rest—Should you come to town pray call on me when I may have the pleasure of shaking your hand and to assure you verbally that I am truly and sincerely