. The anatomical record. Anatomy; Anatomy. TWINS IX FISH 369. Fig. 4 Twin dogfish. X h. Through the kindness of ^Ir. George M. Gray of the Marine Bio- logical Laboratory, 1 had the privilege of examining and photographing twin dogfish which he secured just l^efore they would normally have been extruded. The specimens were males and were apparently nor- mal, with a single yolk sac. Measurements showed that the 'were truly 'identical.' LITERATURE CITED Gemmill, J. F. 1900 The anatomy of syminotriral double monstrosities in the trout. Proc. Roy. Soc, vol. 68, no. 444. 1903 A contribution to
. The anatomical record. Anatomy; Anatomy. TWINS IX FISH 369. Fig. 4 Twin dogfish. X h. Through the kindness of ^Ir. George M. Gray of the Marine Bio- logical Laboratory, 1 had the privilege of examining and photographing twin dogfish which he secured just l^efore they would normally have been extruded. The specimens were males and were apparently nor- mal, with a single yolk sac. Measurements showed that the 'were truly 'identical.' LITERATURE CITED Gemmill, J. F. 1900 The anatomy of syminotriral double monstrosities in the trout. Proc. Roy. Soc, vol. 68, no. 444. 1903 A contribution to the study of double monstrosities in fishes. Proc. Zool. Soc., London, vol. 2, pp. 4-21. Stockard, C. R. 1909 The development of artificially produced cyclopean fish, "the magnesium ; Jour. Exp. Zool., vol. 6, pp. 2S5-33S. 1910 The influence of alcohol and other anesthetics on embryonic development. Am. Jour. .\nat., vol. 10, pp. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bardeen, Charles Russell, 1871-1935, ed; Boyden, Edward A. (Edward Allen), 1886-1976; Bremer, John Lewis, 1874- ed; Hardesty, Irving, b. 1866, ed; American Association of Anatomists; American Society of Zoologists; Wistar Institute of Anatomy and Biology. [New York, etc. ] A. R. Liss [etc. ]
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