184 TEOPISMS 



180 GRABER, V. : Grundlinien zur Erforschung des Helligkeits- und Far- 



bensinnes der Tiere. Leipzig, 1884, pp. vii +322. 



181 GRABER, V. : Ueber die Helligkeits- und Farbenempfindlichkeit einiger 



Meertiere. Sitzngsb. Akad. Wiss. Wien., 1885, xci. 



182 GRABER, V.: Thermische Experimente an der Kiichenschabe (Peri- 



planeta orientalis). Arch. ges. Physiol, 1887, xli, 240-256. 



183 GROOM, T. T., and LOEB, J. : Der Heliotropismus der Nauplien von 



Balanus perforatus und die periodischen Tiefenwanderungen pelag- 

 ischer Tiere. Biol. Centr., 1890, x, 160-177. 



184 GROSS, A. 0. : The Reactions of Arthropods to Monochromatic Lights 



of Equal Intensities. J. Exp. ZooL, 1913, xiv, 467-514. 



185 HABERLANDT, G. : Ueber die Perzeption des geotropischen Reizes. 



Ber. bot. Ges., 1900, xviii, 261-272. 



186 HADLEY, P. B.: The Relation of Optical Stimuli to Rheotaxis in the 

 .American Lobster (Homarus americanus>) . Am. J. Physiol, 1906, 



xvii, 326-343. 



187 HADLEY, P. B. : Galvanotaxis in Larva? of the American Lobster 



(Homarus americanus). Am. J. Physiol., 1907, xix, 3952. 



1 88 HADLEY, P. B. : The Reaction of Blinded Lobsters to Light. Am. J. 



Physiol., 1908, xxi, 180-199. 



189 HADLEY, P. B. : Reactions of Young Lobsters Determined by Food 



Stimuli. Science, 1912, xxxv, 1000-1002. 



190 HARPER, E. H. : Reactions to Light and Mechanical Stimuli in the 



Earthworm, Perichata bermudensis (Beddard). Biol. Bull, 1905, 

 x, 17-34. 



101 HARPER, E. H. : Tropic and Shock Reactions in Perichata and Lum- 

 bricus. J. Comp. Neurol. and Psychol., 1909, xix, 569-587. 



192 HARPER, E. H. : The Geotropism of Paramcecium. J. Morphol., 1911, 



xxii, 993-1000. 



193 HARPER, E. H. : Magnetic Control of Geotropism in Paramcecium. 



J. Animal Behav., 1912, ii, 181-189. 



194 HARRINGTON, N". R., and LEAMING, E. : The Reaction of Amoeba to 



Lights of Different Colors. Am. J. Physiol, 1899, iii, 9-18. 



195 HASEMAN, J. D. : The Rhythmical Movements of Littorina littorea 



Synchronous with Ocean Tides. Biol. Bull, 1911, xxi, 113-121. 



196 HAUSMANN, W. : Die photodynamische Wirkung des Chlorophylls 



und ihre Beziehung zur photosynthetischen Assimilation der Pflan- 

 zen. Jahrb. wiss. Bot., 1909, xlvi, 599-623. 



197 HELMHOLTZ, H. : Handbuch der physiologischen Optik. Hamburg, 



1909-11, 3. Ed. 



198 HENRI, MME. V., and HENRI, V. : Excitation des organismes par les 



rayons ultra-violets. Compt. rend. Soc. Biol, 1912, Ixxii, 992-996; 

 Ixxiii, 326-327. 



