414 DWIGHT E. MINNICH 



Phillips, E. F., and Demuth, G. S. 1914 The temperature of the honey bee- 

 cluster in winter. Bull. U. S. Dept. Agriculture, no. 93, 16 pp. 



Plateau, F. 1887 Recherches exp6rimentelles sur la vision chez les arthro- 

 podes. Ire partie. Bruxelles. 44 pp. 



PouCHET, G. 1872 De I'influence de la lumiere sur les larves dipteres privees 

 d'organs exterieurs de la vision. Rev. et Mag. de Zool., ser. 2, t. 23, 

 pp. 110-117, 129-138, 183-186, 225-231, 261-264, 312-316. 



RX.DL, E. 1901 Untersuchungen iiber die Lichtreactionen der Arthropoden. 

 Arch. f. d. ges. Physiol., Bd. 87, S. 418-466. 



1903 Untersuchungen tiber den Phototropismus der Tiere. Leipzig, 

 viii + 188 pp. 



Stockaed, G. R. 1908 Habits, reactions, and mating instincts of the 'walking 

 stick,' Aplopus Mayeri. Papers from theTortugas Laboratory of the 

 Carnegie Institution of Washington, vol. 2, pp. 45-49. 



Treviranus, G. R. 1832 Die Erscheinungen und Gesetze des organischen 

 Lebens. Bd. 2, Abt. 1. Bremen. 234 pp. 



Turner, C. H. 1912 The reactions of the mason wasp, Trypoxylon albotarsus 

 to light. Jour. Animal Behavior, vol. 2, pp. 353-362. 



Walter, H. E. 1907 The reactions of planarians to light. Jour. Exp. Zool.,- 

 vol. 5, pp. 35-162. 



