PROTOZOA. 
20 Prof. 
tion takes place, even after conjugation. Weismann’s theory of the 
immortality of Protozoa is attacked. 
Butschli, on pp. 1278-1292, deals with the striation observable in 
various forms of Ciliata. On pp. 1293-1303 the Myonemes, or contractile 
fibrils of the ectoplasm, are discussed. For metabolic products — carbo- 
hydrates, pigments, &c. — see pp. 1469-1490. He treats of nuclei on 
p. 1450, and of gelatinous and membranous capsules on p. 1539. Repro- 
duction and the formation of colonies, metamorphosis, gemmation, &c. ; 
id. p. 1560. 
Assimilation in Colpoda is carried on by the granules or corpuscles of 
the endoplasm, and is effected by the aid of water containing oxygen. 
Uric acid is passed out by the contractile vacuoles. Riiumbler. 
Meissner found that Rhizopods did hot act on starch or oil drops, 
but digested animal and vegetable albumeus. Infusorians converted 
starch into a substance (P dextrin), staining red with iodine solution. 
Cooked albumen was not acted on. Amoeba princeps digested a Difflugia 
in twenty-five minutes. 
Fabre-Domergue (2) discovers in the protoplasm of Infusorians 
certain yellow spherules, readily soluble in caustic potash, but less readily 
after treatment with osmic acid. He calls them “ reserve substances.” 
For further physiological researches on Ciliata, see Fabre-Domergue 
(3). 
Henneguy investigates the influence of light on Noctiluca. He finds 
this animal to be non-luminous during the day, aud brightest two hours 
after sunset. 
Kunstler (3) treats of the vesicular elements of the protoplasm of 
Protozoa. 
On the division of the nucleus in Euplotes harpa, see M6 bius (2). 
For various papers on the conjugation and reproduction of Paranicecium 
and Vorticellids, see Maupas. 
Maupas (2), on the multiplication of Ciliata , gives a full accouut of 
the subject, with numorous statistics, and illustrated by good plates. 
The subject of Infusorian conjugation is also treated by Plate (8, 9). 
Pouchet deals with artificially incited multiplication in Noctiluca. 
On sexual reproduction in Protozoa , see Rees. 
Karyokinesis in Euglypha ; Schewiakoff. 
The conjugation and multiplication of Tintinnodca are discussed by 
Daday (1), on p. 508. 
V.— PALAEONTOLOGY. 
The form of Eozoon is not indefinite, but well-preserved specimens 
show a funnel- or top-shaped form. This fossil is often found in Lauren- 
tian Limestones. So-called Eozoon specimens iu museums are frequently 
imitative forms of gneiss, &c. Dawson. 
Carter (3) regards the scarlet spherules found in many fossil Fora - 
mini/era as elements of reproduction. Similar spherules are found in 
fresh specimens, but the colour is due to mineralization. 
Brady (1) describes Furaminifera from the Abrolhos Bank. The 
same author gives an account of the so-called “Soapstone” of Fiji, in 
