50 GEORGE T. HARGITT 



Since there is no evidence to disprove the view that chromo- 

 somes are genetically related, this may be accepted for the 

 coelenterates. But all the evidence from this phylum is opposed 

 to the \dew of a persistent morphological continuity and an 

 individuality of the chromosomes retained during interkinesis. 



BIBLIOGRAPHY 



Agassiz, a. 1865 North American Acalephae. Cambridge, Mass. 



Bachman, Feeda M. 1914 The migration of the germ cells in Amiurus nebulo- 



sus. Biol. Bull., vol. 26. 

 Beckwith, Cora Jipson 1914 The genesis of the plasma-structure in the egg 



of Hydractinia echinata. Jour. Morph., vol. 25. 

 VAN Berenbebg-Gossler, H. 1914 Uber Herkunft und Wesen der sogenannten 



primaren Urgeschlechtszellen der Amnioten. Anat. Anz., Bd. 47. 

 Braem, F. 1894 Uber die Knospung bei mehrschichtigen Tieren, insbesondere 



bei Hydroiden. Biol. Centralbl., Bd. 14. 



1908 Die Knospung der Margeliden, ein Bindeglied zwischen ge- 

 schlechtlicher und ungeschlechtlicher Fortpflanzung. Biol. Centralbl., 

 Bd. 28. 



Brauer, a. 1891 Uber die Entwicklung von Hydra. Zeitschr. f. wiss. Zool., 

 Bd. 52. 



Champy, C. 1914 Quelques resultats de la methode de culture des tissus. 

 Arch. Zool. Exp. et Gen., T. 53, Notes et Revue, pp. 42-51. 



Child, C. M. 1915 Senescence and rejuvenescence. Univ. of Chicago Press. 



Chxjn, C. 1895 Biologische Studien iiber pelagische Organismen. I. Die 

 Knospungsgesetze der proliferirenden Medusen. Bibl. Zool. No. 19, 

 Chun and Leuckart. (Abstr. in Zool. Jahresb., 1895.) 



CowDRY, E. V. 1916 The general functional significance of mitochondria. Am. 

 Jour. Anat., vol. 19. 



Danchakoff, Vera 1916 Studies on cell division and cell differentiation. I. 

 Development of the cell organs during the first cleavage of the sea- 

 urchin egg. Jour. Morph., vol. 27. 



1918 Equivalence of different hematopoietic anlages. II. Grafts of 

 adult spleen on the allantois and response of the allantoic tissue. 

 Am. Jour. Anat., vol. 24. 



DeMorgan, W., and Drew, G. Harold 1914 A study of the restitution masses 

 formed by the dissociated cells of the hydroids Antennularia ramosa 

 and A. antennina. Jour. Marine Biol. Assoc, of U. K., vol. 10. 



Downing, E. R. 1905 The spermatogenesis of Hydra Zool. Jahrb., Abth. f. 

 Anat., Bd. 21. 



1909 The ovogenesis of Hydra. Zool. Jahrb., Abth. f. Anat., Bd. 28. 

 Gatenby, J. Bronte 1916 The transition of peritoneal epithelial cells in 



some Amphibia Anura, especially in Rana temporaria. Quart. Jour. 

 Mic. Sci., vol. 61. 

 Goette, a. 1907 Vergleichende Entwicklungsgeschichte der Geschlechtsin- 

 dividuen der Hj^dropohqien. Zeitschr. f. w. Zool., Bd. 87. 



