BREEDING HABITS OF AMPHIBIA 



^1 



Shapiro, H. k. , IS'^1 - "The role of distance receptors in the establishment of the mating 

 reflex in Xenopus laevis, The Nares." Jour, Exp. Biol. ll+:38. 



Smith, B. G., I9II - "Notes on the natural history of Amblystoma Jeffersonianum, A. punc- 

 tatum and A. tigrinum." Bull. Wise. Nat. Hist. Soc. 9:ll4-. 



Smith, C. L., I956 - "The clasping reflex in frogs and toads and the seasonal development 

 of the brachial musculature." Jour. Exp. Biol. 15:1. 



Smith. B. E., 19'+'+ - "Mating behavior in Tritunis torosus and related newts." Copeia. 



t:255. 

 Waring, H., F. W. Landgrebe, & E. M. Nell, 19'+1 - "Ovulation and oviposition in Anura." 



Jour. Exp. Biol. l8:l. 



Wilder, I. W., 1921+ - "The relation of growth to metamorphosis in Eurycea bislineata." 



Jour. Exp. Zool. 1+0:1. 



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Company. 



"Not only do the body fluids of the lower forms of marine 

 life correspond exactly with sea water in their composition, 

 but there are at least strong indicat ions that the fluids of 

 the highest animals are really descended from sea water . . . . 

 the same substances are present in both cases, and in bnth 

 cases sodium chloride predominates." 



L. J. Henderson 1913: "Fitness of the Environment" 



"Of course, I am not forgetting that development and 

 evolution are in the main epigenet ic proces ses by which the 

 more complicated end stages are built upon the less compli- 

 cated earlier ones, but I also refuse to forget that these 

 earlier stages are also complex, that the egg or the Para- 

 mecium are complex organisms and that development is endo- 

 genetic as well as epigenet ic . Both epigenesis and endo- 

 genesis are involved in all deve lopment and evolut ion. " 



E G. Conklin, 19ii 



