REFERENCES TO LITERATURE 323 



Jenkinson, J. W. 1911. On the Origin of the Polar and 

 Bilateral Structure of the Egg of the Sea-urchin. Arch. 

 Entwick. Bd. 32. 



1913. Vertebrate Embryology. Oxford. 



Jennings, H. S. 1896. The Early Development of Asplanchna 

 herrickii. Bull. Mus. Comp. Zool. Vol. 30. 



Jordan, H. E. 1910. The Relation of Nucleoli to Chromosomes 

 in the Egg of Cribrella sanguinolenta. Arch. Zellf. Bd. 5. 



1911. The Spermatogenesis of the Opossum. Id. Bd. 7. 



Jorgensen, M. 1910. Beitrage zur Kenntnis der Eibildung, 



Reifung, Befruchtung und Furchung bei Schwammen 

 (Syconen). Arch. Zellf. Bd. 4. 



Kahle, W. 1908. Die Paedogenese der Cecidomyiden. 

 Zoologica. Bd. 21. 



Kellicott, W. E. 1913. A Text-Book of General Embryol- 

 ogy. New York. 



Kellogg, V. L. 1907. Sex Differentiation in Larval Insects. 

 Biol. Bull. Vol. 12. 



King, H. D. 1908. The Oogenesis of Bufo lentiginosus. Journ. 

 Morph. Vol. 19. 



1910. Some Anomalies in the Genital Organs of Bufo 



lentiginosus and their Probable Significance. Amer. Journ. 

 Anat. Vol. 10. 



Kite, G. L. 1913. Studies on the Physical Properties of Proto- 

 plasm. Amer. Journ. Physiol. Vol. 32. 



Kleinenberg, N. 1872. Hydra, eine anatomisch-entwick- 

 lungsgeschichtliche Untersuchung. Leipzig. 



1879. The Development of the Earthworm, Lumbricus 



trapezoides. Quart. Journ. Mic. Sci. Vol. 19. 



1881. Ileber die Entstehung der Eier bei Eudendrium. 



Zeit. wiss. Zool. Bd. 35. 



Knappe, E. 1886. Das Bidder'sche Organ, etc. Morph* 



Jahrb. Bd. 11. 

 KoLTZOFF, N. K. 1906. Studien Uber die Gestalt der Zelle. 



Arch. mikr. Anat. Bd. 67. 

 Korotneff, a. 1883. Zur Kenntniss der Embryologie von 



Hydra. Zeit. wiss. Zool. Bd. 38. 



