36 Trot. 
IT. Protozoa. 
[1911] 
Intracellulare Verdauung der In- 
fusorien (Russ.); Metalinikoff, 322. 
Der Gasweclisel von Colpidium col- 
poda ; Wacliendorff, 482a. 
Senescence, degeneration. 
Notes on physiological degeneration 
in Crithidia calliphorae and Herpeto- 
monas c. . Swellengrebel, 459. 
On senile degeneration (depression- 
periods) in Infusoria ; Enriques, 147. 
Moveim nt, contractility. 
Ein Versuch, amoboide Bewegung 
als Folgeerscheinung des wechselnden 
elektrisohon Folarisationszustandcs dor 
Plasmahaut zu erkliiren; McClendon, 
315. 
Peculiar modes of pseudopodial pro- 
gression in Amoeba proteus; Gruber, 
203. 
Fortbewegungsweise der Gregarinen ; 
Sokoloff, 439. 
Ueber die Bewegung der Tropica- 
macrogameten ; de Raadt, 382. 
Ultramikroskopische Studien liber 
Geisselbewegung bei verschiedenen 
Flagellaten; Ulehla, 476. 
Sinuous, undulatory and even amoe- 
boid movements in intestinal Flagellates 
( Bodo , Trichomastix ); Gineste, 191. 
Action de diverses radiations lumi- 
neuses sur le mouvement des zoospores 
de Chlamydomonas ; Desroche, 134. 
Contraction des Stiels von Vorti- 
celliden ( Zoothamnium ); Koltzoff, 
255 & 256. 
Sex and Conjugation. 
Das Problem der Befruchtung und 
die Protozoonforschung ; Teichmann, 
471. 
Sexuality and the problem of isogamy 
in the Infusoria; Enriques, 148. 
Unlimited reproduction in Paramoe- 
cium, under suitable conditions, with- 
out conjugation ? ; Woodruff, 506. 
Environmental effects ; response 
to stimuli; adaptation. 
Einlluss der Temperatur auf die 
Bewegung der Gregarinen; Sokoloff, 
439. 
Mode d’ action des lumieres color6es 
sur les zoospores de Chlamydomonas ; 
Desroche, 134 & 136. 
Effect of gravity upon the movements 
and aggregation of Euglena viridis 
and other spp., Chlamydomonas and 
Olenodinium ; Wager, 483. 
Galvanotropic orientation in Oonium 
pectorals ; Moore & Goodspeed, 331. 
Variations of Ceratium hirundinella, 
according to season, place, temperature ; 
Guyer, 205. 
Formveranderung von Ceratium 
hirundinella 0. F. Mull, als Anpassungs- 
erscheinung an die Schwebefiihigkeit ; 
Krause, 257. 
Verhalten von Infusorien und anderen 
niederen Organismen gegen stark ver- 
diinnte wasserige Aufiosungen von 
Basen ; Bokorny, 45. 
The geotropism of Paramoecium ; 
Harper, 211. 
Evidence on the adaptation of 
Paramcecia to different environments ; 
Woodruff, 507. 
The effect of the culture-medium 
contaminated with the excretion-pro- 
ducts of Paramoecium upon its rate of 
reproduction ; Woodruff, 509 510. 
The temperature- coefficient of the 
rate of reproduction in Paramoecium 
aurelia ; Woodruff & Baitsell, 513. 
Effects produced by cutting Paramoe- 
cia into two ; Calkins, 68. — Effects of 
artificially dividing Paramoecia upon 
the subsequent behaviour and nuclear 
condition of the half lacking a micro- 
nucleus (during the asexual period) ; 
Lewin, 286. 
Einwirkung vorschiodcnor Ursachen 
auf die Contraction des Stieles von 
Zoothamnium alternans ; Koltzoff, 255 
& 256. 
Effects of chemical reagents, 
etc. 
Biological considerations upon the 
resistance of Trypanosomes to toxins ; 
creation of refractive strains probably 
due to selection; Levaditi & Twort, 
284. 
Alteration of the chemieo-physio- 
logical properties of T. lewisi (vis-a-vis 
the rat) during the development in an 
