1913] Gee: Behavior of Leeches 301 



X. BIBLIOGRAPHY 



Adams, G. P. 



1903. On the negative and positive phototropism of the earthworm, 

 AUolobophora foetida (Sav.), as determined by light of dif- 

 ferent intensities. Amer. Journ. Physiol., 9, 26-34, 2 figs, 

 in text. 

 Allee, W. C. 



1912. An experimental analysis of the relation between physiological 

 states and rheotaxis in Isopoda. Journ. Exp. Zool., 13, 269- 

 344, 10 figs, in text. 

 Apathy, S. 



1888. SUsswasser Hirudineen. Zool. Jahrb. Syst., 3. 725-794. 

 Beddard, F. E. 



1896. "Hirudinea, " in Cambr. Nat. Hist. (New York, Macmillan Co.), 

 2, 392-408, 257 figs, in text. 



BlEDERMANN, W. 



1910. "Die Aufnahme, Verarbeitung und Assimilation der Nahrung, 



IV, Die Anneliden, " in JL. Winterstein 's Handbuch der Ver- 

 gleichenden Physiol. (Jena, Gustav Fischer), 1 and 2, pp. 

 540-602, 26 figs, in text. 



BOHN, G. 



1907. Les tropismes, la sensibility diff^rentielle et les associations 



chez le Branchellion de la torpille. C.-K. Soc. Biol., Paris, 



63, 545-548, 1 fig. in text. 

 1909a. Sensibilisation et desensibilisation des corallaires fouisseurs. 



Hid., 67, 484-486, 1 fig. in text. 

 ].t09b. La sensibilisation et la desensibilisation, considerees du point 



de vue de la chemie physique. Ibid., 67, 542-544, 1 fig. in 



text. 

 1909c. Sensibilisation et desensibilisation dues a des excitations re- 



petees. Ibid., 67, 634-636, 1 fig. in text. 

 1909d. La naissance de 1 'intelligence. (Paris, E. Flammarion), 350 



pages, 40 figs, in text. 

 BoLsnjs, H. 



1911. Notice sur la biologie des Clepsines. Zool. Anz., 38, 454-455, 



1 fig. in text. 

 Bonnet, S. 



1775. Lettre a Valmont de Bomare sur les sangsues considerees, non 

 eomme barometres, mais comme thermometres. Rozier, Obs. 

 Phys., 5, 170. 

 Brandt, J. F., and Ratzeburg, J. T. C. 



1833. Medizinisehe Zoologie (Berlin, Trowitzsch und Sohn), 2, iv + 

 364, 37 plates. 

 Brumpt, E. 



1901. Reproduction des hirudinees. Mem. Soc. Zool. France, 13, 286- 

 430, 64 figs, in text. 



