320 GERM-CELL CYCLE IN ANIMALS 



GUTHERZ, S. 1912. UebereinbemerkenswertesStrukturelement 

 ' (Heterochromosome ? ) in der Spermiogenese des Menschen. 



Arch. mikr. Anat. Bd. 79. 

 GUYER, M. 1909a. The Spermatogenesis of the Domestic 



Guinea. Anat. Anz. Vol. 34. 



19096. The Spermatogenesis of the Domestic Chicken. 



Id. Vol.34. 



1910. Accessory Chromosome in Man. Biol. Bull. Vol. 

 19. 



1911. Nucleus and Cytoplasm in Heredity. Amer. 

 Nat. Vol. 45. 



HADZI, J. 1906. Vorversuche zur Biologic von Hydra. Arch. 



Entwick. Bd. 22. 



HAECKEL, E. 1872. Die Kalkschwamme. Berlin. 

 HAECKER, V. 1892. Die Furchung des Eies von Aequorea 

 forskalea. Arch. mikr. Anat. Bd. 40. 



1895. Die Vorstadien der Eireifung. Id. Bd. 45. 

 1897. Die Keimbahn von Cyclops. Id. Bd. 49. 



1899. Die Reifungserscheinungen. Anat. Hefte. Bd. 8. 



1912. Allgemeine Vererbungslehre. 2d. Ed. Braun- 

 schweig. 



HALLEZ, P. 1886. Loi de 1'orientation de 1'embryon chez 



les Insects. C. R. Acad. Sci. T. 103. 



HARGITT, C. W. 1904a. The Early Development of Euden- 

 drium. Zool. Jahrb. Bd. 20. 



19046. The Early Development of Pennaria tiarella. 

 Arch. Entwick. Bd. 18. 



1906. The Organization and Early Development of 

 Clava leptostyla. Biol. Bull. Vol. 10. 



1911. Some Problems of Ccelenterate Ontogeny. Journ. 



Morph. Vol. 22. 



HARGITT, G. T. 1913. Germ Cells of Ccelenterates. I. 



Campanularia flexuosa. Journ. Morph. Vol. 24. 

 HARM, K. 1902. Die Entwickelungsgeschichte von Clava 



squamata. Zeit. wiss. Zool. Bd. 73. 

 HARMAN, M. T. 1913. Method of Cell-Division in the Sex 



Cells of Tsenia teniaeformis. Journ. Morph. Vol. 24. 



