480 INTRODUCTION TO CYTOLOGY 



1921. Jour. Exp. Zool. 34: 417-447. [Viscosity and mitosis.] 



1923. Amer. Jour. Physiol. 64: 481-498. [Electrical phenomena.] 



1924a. Amer. Jour. Physiol. 68 : 645-648. [Temperature effects.] 



19246. Amer. Jour. Physiol. 69: 190-199. [Heat coagulation.] 



1924c. Biol. Bull. 46: 277-280. [Egg membrane elevation.] 



1925a. Jour. Exp. Zool. 41 : 243-260. 



19256. Biol. Bull. 49 : 241-249. 



1925c. Arch. Mikr. Anat. 104: 313-316. [Gelation and mitosis.] 



1925/. Biol. Bull. 49 : 461-476. [Viscosity.] 



1926c. Jour. Exp. Zool. 44 : 255-278. [Viscosity.] 



1927. Quar. Eev. Biol. 2 : 230-248. [Viscosity.] 



1928. The Colloid Chemistry of Protoplasm. Berlin. 

 1929a. Protoplasma 8 : 58-64. [Viscosity.] 



19296. Protoplasma 8 : 65-69. [Viscosity.] 



1930a. Proc. Amer. Phil. Soc. 69: 295-301. [Surface precipitation.] 

 Heilbrunn, L. v., and II. A. Young. 1930. Physiol. Zool. 3: 330-341. 

 Heimans, J. 1928. Rec. Trav. Bot. Neerl. 25A: 138-167. illus. [Lilium.\ 

 Heitz, E. 1922. Untersuchungen iiber die Teilung der Chloroplasten, usw. Strass- 

 burg. 



1925a. Biol. Zentralbl. 45: 179-186. 2 figs. [Chloroplasts.] 



19256. Arch. Wiss. Bot. 1 : 241-259. pi. 1. 6 figs. [Melandrium.] 



1927a. Planta 4 : 392-410. illus. [Antirrhinum.] 



19276. Abh. Naturwiss. Ver. Hamburg 21 : 48-58. illus. 



1927c. Ber. Deu. Bot. Gesell. 45: 607-610. illus. [Pellia.] 



1928a. Planta 5 : 725-768. illus. [Pellia.] 



19286. Jahrb. Wiss. Bot. 69: 762-818. illus. [Pellia.] 



1929a. Ber. Deu. Bot. Gesell. 47 : 274-284. illus. {Heterochromatin.] 



1931a. Planta 12 : 775-844. illus. [Nucleoli.] 



19316. Planta 15 : 495-505. illus. [NucleoU in Ficm.] 

 Heitzmann, C. 1883. Microscopical Morphology, etc. New York. 

 Helvestine, F. 1921. Jour. Morphol. Physiol. 36: 103-117. 2 pis. [Amitosis.] 

 Helwig, E. R. 1929. Jour. Morphol. Physiol. 47 : 1-36. illus. 



1932. Science 76: 352. illus. 



Henckel. 1901. Nyt Mag. Naturv'id. 39: 355. [Cystoclonium.] 

 Henderson, L. J. 1913. The Fitness of the Environment. New York. . . 

 VON Henking, H. 1891. Zeitschr. Wiss. Zool. 51 : 685-736. pis. 35-37. 



1892. Zeitschr. Wiss. Zool. 54: 1-274. pis. 1-12. 12 figs. 

 Henneguy, L. F. 1897. Arch. d'Anat. Micr. 1: 481-496. 5 figs. 

 Hering, G. 1888. Lotos 9. See Brain 20 : 232-258. 1897. 

 Herla, V. 1893. Arch, de Biol. 13: 423-520. pis. 15-19. [Ascaris.] 

 Herlant, M. 1917. Arch, de Biol. 28: 505-608. [Artificial parthenogenesis.] 



1920. Compt. Rend. Soc. Biol. Paris 83: 188-190. [Artificial parthenogenesis.] 

 Hermann, J. 1891. Arch. Mikr. Anat. 37: 569-586. pi. 31. 



Hertwig, G. 1911. Arch. Mikr. Anat. 77: II 165-209. illus. [Radium.] 



1912. Arch. Mikr. Anat. 79: II 201-241. illus. [Radium.] 



1913. Arch. Mikr. Anat. 81: II 87-127. illus. [Radium.] 

 1918. Arch. Mikr. Anat. 91: II 1-271. 10 pis. 



1920a. Arch. Mikr. Anat. 94 : 288-302. 1 fig. 



19206. Zeitschr. Strahlentherapie 11. [Radium experimentation.] 



1921. Biol. Zentralbl. 41: 49-87. [Sex.] 



Hertwig, G., und P. Hertwig. 1922. Zeitschr. Ind. Abst. Vererb. 28: 259-294. 

 Hertwig, G., F. K. Studnicka, and E. Tschopp. 1929. Allgemeine Mikroskopische 

 Anatomic der Lebenden Masse. Berlin. 



