152 BERTRAM G. SMITH 



Hay, O. p. 1888 Observations on Amphiuma and its young. Amer. Nat., vol. 



22. 



1890 The skeletal anatomy of Amphiuma during its earlier stages. 



Jour. Morph., vol. 4. 

 Hertwig, Oscar 1906 Handbuch der vergleichenden undexperimentellen Ent- 



wicklungslehre der Wirbeltiere. Bd. 1, Th. 1. Jena, Gustav Fischer. 

 IsHiKAWA, C. 1904 Beitriige zur Kenntniss des Riesen-Salamanders (Megalo- 



batrachus maximus Schlegel). Proc. Dept. Nat. Hist., Tokyo Imper. 



Mus., vol. 1, no. 2. 

 Jenkinson, J. W. 1909 Experimental embryology. Oxford. Clarendon Press. 

 Kerbert, C. 1904 Zur Fortpflanzung von Megalobatrachus maximus Schlegel. 



Zool. Anz., Bd. 27, no. 10. 

 Kerr, J. Graham 1900. External features in the development of Lepidosiren. 



Phil. Trans. Royal Soc, Ser. B, vol. 192. 



1901 The development of Lepidosiren paradoxa. II. With a note 

 upon the corresponding stages in the development of Protopterus 

 annectens. Quart. Jour. Micros. Sci., N. S., vol. 45. 



1907 a The work of John Samuel Budgett. Cambridge. Univ. Press. 



1907 b The development of Polypterus senegalus Cuv. Budgett memo- 

 rial volume (Kerr, '07 a). 



King, Helen Dean 1901 The maturation and fertilization of the egg of Bufo 

 lentiginosus. Jour. Morph., vol. 18, no. 2. 



1902 The follicle sacs of the amphibian ovary. Biol. Bull., vol. 3. 

 1905 The formation of the first polar spindle in the egg of Bufo len- 

 tiginosus. Biol. Bull., vol. 9, no. 2. 



1908 The ovogenesis of Bufo lentiginosus. Jour. Morph., vol. 9, 

 no. 2. 



Kingsley, J. S. 1899 Text-book of vertebrate zoology. New York. Henry 



Holt and Company. 

 Kingsbury, B. F. 1895 The spermathecae and methods of fertilization in some 



American newts and salamanders. Trans. Amer. Micros. Soc, vol. 17. 

 KuNiTOMO, Kanae 1910 Ueber die Entwicklungsgeschichte des Hynobius 



nebulosus. Anatom. Hefte, Beitr. u. Ref. z. Anat. u. Entw., Bd. 40. 

 LiLLiE, Frank R. 1908 The development of the chick. New York. Henry Holt 



and Company. 

 McGregor, J. H. 1896 An embryo of Cryptobranchus. Proc. New York Acad. 



Sci., Dec. 14. Abstract in Zool. Anz., Bd., 20, p. 29. 



1899 The spermatogenesis of Amphiuma. Jour. Morph., vol. 15, Sup- 

 plement. 

 Osborn, H. F. 1888 A contribution to the internal structure of the amphibian 



brain. Jour. Morph., vol. 2, p. 51. 

 Pearl, Raymond 1909 The nature of the stimulus which causes a shell to be 



formed on a bird's egg. Science, March 12. 

 Pike, Nicholas 1886 Notes on the hermit spadcfoot (Scaphiopus holbrookii 



Harlan). Bull. Am. Mus. Nat. Hist., vol 1, no. 7. 



