ALS signed “Julian S. Huxley,” one page both sides, 4.25 x 7, New College, Oxford letterhead, May 21, 1925. Letter to fellow biologist H. C. Tracy. In part: “Mr. Geoffrey Whitworth of Chatto & Windus let me see some of your MS. I was much interested & urged him to accept it. However, I don’t think he needed much urging, & I understand they are to publish your book. I am venturing to send a copy of a book of essays which I published recently, since many of the general points of view are written similar to yours—although my line of approach is, I fear, more conventional!” In fine condition, with mild scattered soiling, and a rusty paperclip impression to the top. Accompanied by the original mailing envelope, filled out in Huxley’s hand. RR Auction COA.