GERM CELLS IN ASCARIS INCURVA 93 



ScHLEiP, \V. 1911 Das Verhalten des Chromatins bei Angiostomum (Rhal)- 

 donema) nigrovenosum. Ein Beitrag zur Kenntniss der Bezeihungen 

 zwischen Chromatin and Geschlechtsbestimmung. Arch. f. Zell- 

 forsch., Bd. 7. 



ScHREiNER, A. UND K. E. 1905 Ueber die Entwicklung der miinnlichen Gescli- 

 lechtzellen von Myxine glutinosa., Arch. Biol., T. 21. 

 1906 Neue Studien ueber die Chromatinreifung der mannlichen 

 Geschlechtzellen von Tomopteris onisciformis. Arch. Biol., T. 22. 



SiNETY, R. DE 1901 Recherches sur la liiologie et I'anatomie des phasmes. 

 La Cellule, T. 19. 



Stevens, N. M. 1903 On the ovogenesis and spermatogenesis of Sagitta bi- 

 punctata. Zool. Jahrb., Abt. Anat. u. Ont., Bd. 18. 



1905 Further studies on ovogenesis of Sagitta. Zool. Jahrlx, Abt. 

 Anat. u. Ont., Bd. 21. 



1906 Studies on spermatogenesis, Part II. A comparative study 

 of the heterochromosomes in certain species of Coleoptera, Hemiptera 

 and Lepidoptera with especial reference to sex determination. Car- 

 negie Inst. Pub. no. 36. 



1910 Further studies on reproduction in Sagitta. Jour. Morph., 

 vol. 21. 



1911 Heterochromosomes in the guinea-pig. Biol. Bull., vol. 21. 

 Sutton, W. S. 1903 The chromosomes in heredity. Biol. Bull., vol. 4. 

 Tretjakoff, D. 1905 Die Spermatogenese bei Ascaris megalocephala. Arch. 



f. Mikr. Anat., Bd. 65. 

 Wilson, E. B. 1905a Studies on chromosomes I. The behavior of the iodo- 

 chromosomes in Hemiptera. Jour. Exp. Zool., vol. 2. 

 1905b Studies on chromosomes II. The paired microchromosomes, 

 idiochromosomes, and hetertropic chromosomes in Hemiptera. 

 Jour. Exp. Zool., vol. 2. 



1909 Studies on chromosomes V. The chromosomes of Metapodius. 

 Jour. Exp. Zool., vol. 6. 



1910 Studies on chromosomes VI. A new type of chromosome eoin- 

 bination in metapodius. Jour. Exp. Zool., vol. 9. 



1911 Studies on chromosomes VII. A review of the chromosomes 

 of Nezara; with some more general considerations. Join-. Morph., 

 vol. 22. 



1912 Studies on chromosomes VIII. Observations on maturation 

 phenomena in certain Hemiptera and other forms, with considerations 

 on synapsis and reduction. Jour. Exp. Zool., vol. 13. 



Winiwarter, H. von 1900 Recherches sur I'ovogenese et I'organogenese 

 de I'ovaire des Mammiferes. Arch. Biol., T. 17. 

 1912 Etudes sur la spermatogenese humaine. Arch. Biol., T. 27. 



Wodsedalek, J. E. 1913 Spermatogenesis of the pig with especial reference 

 to the accessory chromosomes. Biol. Bull., vol. 25. 

 1914 Spermatogenesis of the horse with especial reference to the 

 accessory chromosome and the chromatoid body. Biol. Bull., vol. 27. 



Zeleny, C. and Faust, E. C. 1915 Dimorphism in size of spermatozoa and 

 its relation to the chromosomes. Proc. Nat. Acad. Sci., vol. 1. 



