Bulletin of the United States Bureau of Fisheries Volume 33 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1915 Excerpt: ...10, plate vn. Traces of fat were present in this particular segment just under the sarcolemma and between the outer series of fibrillse. This figure is offered in evidence as showing that the elimination of fat from the pink muscle is not accompanied by any immediate breaking down or degeneration of the finer structure of the tissue. Magnification, Leitz, ocular 3, objective 1/12 oil immersion. Camera lucida outlines. PLATE IX. F1g. 14. The trunk dark muscle of young salmon no. 97 from the McCloud River, Baird, Cal. The muscle fibers are drawn in outline to show the compact arrangement and relative size of the fibers as compared with the adult. One particular fiber in this figure showed an exceptionally large fat drop in the middle of the fiber. Magnification, Leitz ocular 4, objective 3. F1g. 15. Dark trunk muscle of salmon no. 126 from the Columbia River at Warrendale, Oreg. Drawing to show the outlines of the fibers of the adult fish after the fat is largely removed. This figure should be compared with the preceding. Magnification, Leitz ocular 4, objective 3. PLATE X. F1g. 16. Outline of the trunk pink fibers of the young fish no. 97 from the McCloud River, Baird, Cal. The figure shows outlines of the fibers at a stage in which active growth is taking place. The large number of relatively small fibers have recently split off the larger in the process of fiber multiplication. Magnification, Leitz ocular 4, objective 3. F1g. 17. Trunk pink muscle fibers from adult salmon no. 118 from the mouth of the Columbia River at Ilwaco, Wash. The outlines of the fibers show the relative symmetry of the adult prime condition muscle. The separation of the fibers is due to the loading of fat in the interstitial connective tissue. Should be compared with figure 8, plate...