VAVON (Antoine). La Truite ses mœurs, l'art de la pêcher. Étampes: Maurice Dormann et Cerf, 1927. - In-4, 330 x 253: XII, 369 pp, (5 ff.), 11 plates, printed cover. Paperback, filled cover. First edition, printed in an edition of 650 copies, of what is considered to be the finest book ever published on trout fishing. The author offers an exhaustive study of trout: classification, anatomy, habitats, instinct, etc., as well as a detailed analysis of fishing techniques - baits, influence of external conditions, equipment, entomology, artificial fly fishing, natural insects, worms, minnows (natural and artificial), and finally sport fishing. "In the absence of other qualities, my book will, I believe, be original in that the practice of fishing will be destroyed from the very mores of fish. This method at least has the advantage of giving a reasoned theory of fishing. What's more, it obliges the angler to constantly seek an explanation for the facts he observes, and this is a gymnastic exercise from which he may fail to derive the greatest benefits" (foreword). The edition is illustrated with numerous full-page and in-text black compositions by Cousyn and Clérin, as well as 11 superb color plates, each accompanied by a descriptive leaf, by Clérin, Daumain and Faddegon. One of 600 copies on Dujardin paper. A well-preserved copy, largely uncut. Some light foxing on the cover and first two leaves. Booklets 6 to 11 are partly unbound.