THYROID AND IODINE AND METAMORPHOSIS 319 



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59:69. (See. also Jour. Exp. Zool. 71:317) 

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GUNTHORP, H. , 1932 - "Results of feeding thyroid glands of various vertebrates to tadpoles. " Physiol. Zool. 5:397. 

 HUNT, E. GJ. N. DENT, 1957 - "Iodine uptake and turnover in frog tadpoles. " Physiol. Zool. 30:87-91. 

 INGRAM, W. R. , 1929 - "Studies on amphibian neotony. I. The metamorphosis of the Colorado axolotl by injection of inorganic 



iodine." Physiol. Zool. 2:149. 

 LYNN, W. G. & H. WACHOWSKl, 1951 - "The thyroid gland and its functions in cold-blooded vertebrates. " Quart. Rev. Biol. 



26:123. 

 SCHNEIDER, B. A., 1939 - "Effects of feeding thyroid substance. " Quart. Rev. Biol. 14:289. 

 SPAUL, E. A., 1925 - "Iodine and amphibian metamorphosis." Proc. Zool. Soc, London. 995. 

 SWINGLE, W. W. , 1926 - "The effect on amphibian differentiation of feeding iodofibrin, iododestin, and iodogliadin. " Anat. 



Rec. 34:130. 

 UHLENHUTH, E. G H. KARNS, 1928 - "The morphology and physiology of the salamander thyroid gland. III. The relation of 



the number of follicles to development and growth of the thyroid in Amblystoma maculatum." Biol. Bull. 54:128. 



"The higher organisms made themselves largely independent of their 

 immediate environment. Their tissues are bathed froyn within by a fluid 

 (blood) ivhich they carry around uith theni. a sort of internal environment. " 



A. J. Lottm 



"It would appear, when the marine ancestors of terrestrial vertebrates 

 emerged from the sea and adventured upon dry land, they packed, as it were, 

 a portion of their saline environment in their baggage, and took along with 

 them on their excursion as an essential part of their internal milieu . . . 

 we ourselves carry about with us in our arteries and veins, if not a portion 

 of the actual ocean, at least a roughly approximate replica of its brine . . . 

 There are strong- indications that the fluids of the highest animals are really 

 descended from sea water. " 



L. J. Henderson 



"Since the Stone Age the average size of man has increased by five 

 centimeters (2 inches). When menibers of t lie Scottish nobility wanted to 

 present a pageant for Queen Victoria during her uedding tour, they found 

 that the historic suits of armour were too small. The descendants liad 

 outgrown the armour of their ancestors. " 



F. Kahn, 1944 



"Countless human beings are being starved to death for the need of 

 nitrogen (as protein) even though they are living in an atmosphere of 79% 

 nitrogen, which they cannot use. This is probably the greatest paradox of 

 terrestrial life, and at the same time the greatest tragedy of mankind. " 



F. Kahn, 1944 



