LITERATURE 205 



542 Loeb, J.: Influence of the Leaf upon Root Formation and Geotropic 



Curvature in the Stem of Bryophyllum calcycinum and the Possi- 

 bility of a Hormone Theory of These Processes. But. Gaz., 1917, 

 lxiii, 25-50. 



543 Loeb, J. : Untersuchungen zur physiologischen Morphologic der Tiere. 



I. Heteromorphose. II. Organbildung und Wachstum. Wurzburg, 

 1891-1892. 



544 Loeb, J.: The Chemical Mechanism of Regeneration. Ann. Inst. 



Pasteur, 1918, xxxii, 1-16. 



545 Craig, W".: Appetites and Aversions as Constituents of Instincts. 



Biol. Bull, 1918, xxxiv, 91-107. 

 •~ l40 Kanda, S. : Further Studies on the Geotropism of Paramecium cau- 



datum. Biol. Bull, 1918, xxxiv, 108-119. 

 •' l " Lyon, E. P. : Note on the Geotropism of Paramecium. Biol Bull, 



1918, xxxiv, 120. 



548 McClendon, J. F. : Protozoan Studies. J. Exp. Zool, 1909, vi, 265- 



283. 



549 McEwen, R. S. : The Reactions to Light and to Gravity in Drosophila 



and its Mutants. J. Exp. Zool, 1918, xxv, 49-106. 



550 Payne, F. : Forty-nine Generations in the Dark. Biol. Bull, 1910, 



xviii, 188-190. 



551 Pa'sne, F. : Drosophila ampelophila Loew Bred in the Dark for Sixty- 



nine Generations. Biol Bull, 1911, xxi, 297-301. 



552 Morgan, C. L. : Animal Behavior. London, 1900. 



553 Stevens, N. M. : Regeneration in Antennularia. Arch. Entwcklngs- 



mech., 1910, xxx, pt. 1, 1-7. 



554 Maxwell, S. S'. : On the Exciting Cause of Compensatory Move- 



ments. Am. J. Physiol, 1911-12, xxix, 367-371. 



