BIBLIOGRAPHY 315 



145. Jennings, H. S., 1906. Modifiability in Behavior, 2. Factors 



determining Direction and Character of Movement in the Earth- 

 worm. Journ. Exp. Zool., vol. 3, pp. 435~455- 



146. Johnston, J. B., 1903. On the Blood Vessels, their Valves, and the 



Course of the Blood in Lumbricus. Biol. Bull., vol. 5, pp. 

 74-84. 



147. Langdon, F. E., 1895. The Sense-Organs of Lumbricus agricola 



Hoffm. Journ. Morph., vol. u, pp. 193-234. 



148. Marshall, A. M., and C. H. Hurst, 1899. Practical Zoology. 



5th edition. New York. 



149. Morgan, T. H., 1901. Regeneration. New York. 



150. Nagel, W. A., 1896. Der Lichtsinn augenloser Thiere. Jena. 



151. Parker, G. H., 1909. The Origin of the Nervous System and its 



Appropriation of Effectors. Pop. Sc. Monthly, vol. 75, pp. 56-64; 



137-146; 253-263; 338-345- 

 152. , and L. Arkin, 1901. The Directive Influence of Light on 



the Earthworm, Allolobophora foetida. Am. Journ. Physiol., 



vol. 5, pp. 151-157- 

 153. , and C. R. Metcalf, 1906. The Reactions of Earthworms to 



Salts. Am. Journ. Physiol., vol. 17, pp. 55-74. 

 154. Rice, W. J., 1902. Studies in Earthworm Chloragogue. Biol. 



Bull., vol. 3, pp. 88-94. 

 :55. Smith, A. E., 1902. The Influence of Temperature, Odors, Light, 



and Contact on the Movements of the Earthworm. Am. Journ. 



Physiol., vol. 6, pp. 459-486. 

 156. Washburn, M. F., 1908. The Animal Mind. New York. 

 [57. Wilson, E. B., 1889. The Embryology of the Earthworm. 



Journ. Morph., vol. 3, pp. 387-462. 



CHAPTER XI 

 THE CRAYFISH AND ARTHROPODS IN GENERAL 



158. Andrews, E. A., 1904. Crayfish Spermatozoa. Anat. Anz., 



Bd. 25, pp. 456-463. 

 [59. , 1904. Breeding Habits of Crayfish. Am. Nat., vol. 38, 



pp. 165-206. 

 [60. , 1906. Egg-laying of Crayfish. Am. Nat., vol. 40, pp. 343- 



356. 

 [61. , 1906. Partial Regeneration of the Sperm-receptacle in 



Crayfish. Journ. Exp. Zool., vol. 3, pp. 121-128. 



