GENERAL, STRUCTURE, PHYSIOLOGY. 
Trot. 13 
Freshwater Protozoa (Eyferth, B.). 
Relation of Protozoa to Porifera (Heider, K.). 
Phylogeny of Heteroplastids from Volvox-Wks colony (Salensky, W.). 
Structure. 
[See Cell.] 
Structure of Infusoria (Brass, A. ). 
Contractile muscle- fibres of Vorticellince (Brauer, A.). 
Rldzopoda. Structure and distribution of nuclei ; structure of the 
protoplasm (Biitschli, O.). 
Structure of contractile vacuoles (Fiszer, Z.). 
Protozoa without nuclei (Gruber, A.). 
Protoplasmic layers in Rhizopods either artificial or physical 
(Gruber, A.). 
Structure of Flagellates — “ eyes,” &c. (Kiinstler, J.). 
Adoral organ formed of cilia united in comb-like plates (Mobius, K.). 
Structure and phenomena of division in Opalina and Gastrostyla ; 
(Nussbaum, M.). 
Details of nuclear changes in dividing Opalina (Pfitzner, W.). 
Eye with true crystalline and choroid portion in Gymnodinium poly- 
phemuSy P. (Pouchet, G.). 
Longitudinal and transverse muscular fibres which could be isolated in 
cortical layer of Gregarina flava (Roboz, Z. v.). 
Nucleus of Rhizopods rendered visible by weak discharge from single 
small Leyden jar (Wallich, G. C.). 
Physiology. 
[See Protoplasm.] 
General Physiology, e.g ., of internal movements (Berthold, G.). 
Sphcerozoa. Nutritive function of symbions ; movement ; relation to 
environment — salinity, &c.; phosphoresence in oil globules, &c. (Brandt, K.). 
Contractility and encystation of Bursaria truncatella , &c. (Brauer, A.). 
Rhizopoda. “Parasitic ” cells in Orbitolites, &c., comparable to “ yellow 
cells”; other partner organisms (Biitschli, 0.). 
Paraglycogen in Gregarines (Biitschli, 0.). 
Euglenae. Brick-red in morning, vivid green in evening, depending 
upon alterations in amount and abundance of red, oily pigment (Cun- 
ningham, D. D.). 
In Genchridium the contained Algos are not nutriment, but representa- 
tives of Brandt’s Zooxanthellce (Daday, E. v.). 
Difference between intracellular digestion of Protozoa and that of 
Protophyta (Dangeard, P. A.). 
Activity of contractile vacuoles (Fiszer, Z.). 
Ultimate physiology of movement, ingestion, &c., of Protozoa 
investigated on mathematical lines as problems in molecular dynamics 
(Fuchs, K.). 
Digestion in Amoeba woAActinospTicerium \ direct contact with protoplasm 
said not to be necessary (Greenwood, M.). 
