l6o Herbert Eugene Walter 



LoEB, J., '93b — Ueber kiinstliche Umwandlung positiv heliotropischer Thiere 



in negativ heliotropische und umgekehrt. Arch. f. ges. Physiol., 



Bd. 54, pp. 81-107, 6 Holzsch. 

 '94 — Beitrage zur Gehirnphysiologie der Wiirmer. Arch. f. ges. Physiol., 



Bd. 56, pp. 247-269, Fig. 1-4. 

 Mast, S. O., '03 — -Reactions to Temperature Changes in Spirillum, Hydra and 



Fresh-Water Planarians. Amer. Jour. Physiol., vol. x, no. 4, 



pp. 165-190. 

 Maupas, E., '87 — Sur la puissance de multiplication des Infusories cilies. Comp. 



Rend. Acad. Sci., Paris, tom. 104, pp. 1006-1008. 

 Morgan, C. L., '00 — Animal Behavior. London, 8°, 344 pp. 

 Morgan, T. H., '03 — Evolution and Adaptation. New York, 8°, x + 470 pp. 

 MosELEY, H. N., '74 — On the Anatomy and Histology of the Land Planarians 



of Ceylon; with Some Account of their Habits, and a Description 



of Two New Species, and with Notes on the Anatomy of Some 



European Aquatic Species. Phil. Trans. Roy. Soc. London, vol. 



clxiv, pp. 105-171, pi. 10-15. 

 Nagel, W. a., '94 — Beobachtungen iiber den Lichtsinn augenloser Muscheln. 



Biol. Centralbl., Bd. 14, Nr. 11, pp. 385-390. 

 Oltmanns, F., '92 — Ueber die photometrischen Bewegungen der Pflanzen., 



Flora, Bd. 75, pp. 183-266, Taf. 4. 

 Pansini, '89 — Action de la Lumiere solaire sur les micro-organismes. Ann. Inst. 



Pasteur, tom. 3, pp. 686. 

 Parker, G. H., '02 — The Reactions of Copepods to various Stimuli, and the 



Bearing of this on Daily Depth Migrations. Bull. U. S. Fish Com., 



1901, pp. 103-123. 

 '03 — The Phototropism of the Mourning-cloak Butterfly, Vanessa 



antiopa Linn. Mark Anniversary Vol., pp. 453-469, pi. 33. 

 Parker, G. H., and Arkin, L., '01 — The Directive Influence of Light on the 



Earthworm Allolobophora foetida Sav. Amer. Jour Physiol., vol. 



V, no. 3, pp. 151-157 

 Parker, G. H., and Burnett, F. L., '00 — The Reactions of Planarians, with 



and without Eyes, to Light. Amer. Jour. Physiol., vol. iv, no. 8, 



PP- ■i73,-Z'^S, fig- 1-4- 

 Pearl, R., '03 — The Movements and Reactions of Fresh-water Planarians: A 



Study of Animal Behavior. Quart. Jour. Micr. Sci., vol. xlvi, pp. 



509-714. 

 Pearl, R., and Cole, L. J., '02 — The Eff'ect of very Intense Light on Organisms. 



Michigan Acad. Sci., Third Report, pp. 77-78. 



