PHYSIOLOGY, BIONOMICS. Prot. 31 
traction of a median, tongue-like, posterior prolongation of the body, Giard 
(116). 
Considerations with regard to the movement of Trypanophis , Keysselitz 
(156). 
3. Response to stimuli ; effect of reagents. 
Physiological experiments on Trypanosoma brucii and T. equinum ; 
action of warmth, disinfectants, conservation-media, etc. on the parasites, 
Jakimoff (150). 
Vitality of T. aranulosum in human and other sera ; destructive 
effect of water and other hypotonic liquids on the parasites, SabraziSs & 
Muratet (296). 
Human serum has a slight action on the T. of horses in Gambia (T. 
dimorphon ) but none on the human parasite (T. gambicnse) ; arsenic acid 
exerts some influence on the latter, however, Laveran (164). 
“ Trypanroth ” has little or no permanent effect on Trypanosomes, 
especially on T. gambiense , Laveran (166). 
Cytoplasmic reactions of Paramoecium (as indicated by staining pro- 
pensity) to chemotactic influences, Barratt (10) ; effects of acids and 
bases on P., id. (11). 
Relation of the physical structure of the protoplasm in Paramoecium to 
the reactions of the organism towards thermal, chemical and electrical 
stimuli, Greeley (127). 
Effects of chemical and electrical stimuli on the myonemes of the 
hydrostatic apparatus in the Acanlhometrea , Schewiakoff (303). 
“ Galvanotropism ” (movement, or change in direction of movement, 
induced by electric current) and “ galvanotaxis ” (change of position, axial 
direction) in various Infusoria, Statkewitsch (333). 
Galvanotaxis in Spirostomum ; reactions of the Infusorian towards 
electric currents of different strengths, Wallengren (352). 
Physiological effects of radium on various Protozoa ( Amoeba , Nassula, 
Trypanosoma :), Salomonsen & Drever (297). — Action of radium on 
Opalina ranarum , Veneziani (348). 
Action of light-rays (mostly chemical) on Infusoria (. Paramoecium and 
Colpidium ), Hertel (137). — The significance of pigment in light-percep- 
tion by the Protozoan cell, Halben (133). 
0. Bionomics. 
1 . Plankton. 
Protozoan plankton (mostly Peridinida) collected in the North Atlantic 
(57°-60°), Ostenfeld & Paulsen (255). — Atlantic plankton, Tripylaria, 
many n. spp., Borgert (28). — Plankton distribution in the Atlantic : of the 
Aulacanthidce , Immermann (148) ; of the Acanthometrea , Popofsky (270). 
Abundant occurrence of Noctiluca miliar is, forming a great shoal, off 
the Scilly Isles, Browne (45). — Tay Basin, Protozoan plankton occurring, 
mostly Peridinida, Murray (245 & 246). 
Dinoflagollate plankton from Iceland, Paulsen (258). — In plankton 
from North Sea and Skagerack, two new marine species of Heliozoa, 
Ostenfeld (254). — Protozoan plankton of Danish seas, Wesenberg-Lund 
(356). 
Plankton from Ausgraben lakelets near Plon (Dinoflagellates), Lemmer- 
mann (198). — Protozoan plankton from various ponds and lakelets in 
Thuringia, Saxony, and elsewhere, Zacharias (368 ). — Ceratium hirun- 
dinella in plankton, Alpine lakelets, Brehm & Zederbauer (42). 
Radiolarian plankton, Gulf of Capri, Lo Bianco (205). 
Plankton from Quarnero (Hungary), chiefly Tintinnids, Entz (93). 
