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Abstract of Observations on the Eeproduction of the 
Rhizopoda/' By Prof. Max. Schultze. (Miiller's 
^Archiv/ 1856, p. 165.) 
In the author's work on the ' Organization of the Poly- 
thalamia/ he was in a condition merely to throw out sur- 
mises with respect to the mode of reproduction of these 
animals; but a supply of living Gromise — Eotalidse andMilio- 
lidse — having afforded him an opportunity of making nume- 
rous observations on this subject, he now publishes the re- 
sults at which he has arrived. 
Remarking that an individual belonging to the genus 
Triloculina (D'Orbigny) had become stationary for several 
days, and enveloped, as is not unusual, in a thin layer of 
brownish slime, he paid particular attention to it. At the 
end of a few days after it had become quiescent, the author 
noticed that minute spherical, sharply defined granules were 
detached from the brownish slimy envelope, and in the course 
of a few hours the animal was surrounded with about forty 
of these corpuscles, which gradually became more and more 
widely separated from it. Microscopic examination of these 
bodies proved that they were young Miliolidce. When viewed 
by transmitted light, they presented a pale yellowish-brown 
calcareous shell, consisting of a central, globular portion, 
partly surrounded by a closely applied tubular part, and 
having no septum in the interior. In a short time the young 
animals protruded their contractile processes from the anterior 
opening of the shell, and crawled about upon the object-glass. 
The parts of the body enclosed in the transparent shell could 
be examined with great accuracy under the highest magnify- 
ing powers, and were seen to consist of a transparent, very 
finely granular, colourless material, of which the protruded 
filaments were an immediate continuation, and in which were 
imbedded minute, sharply defined granules, protein- and fat- 
molecules, some of considerable size, and angular, like the 
vitelline plates in the ovum of fishes. 
He was unable to perceive in the young Miliolidce, either 
vesicular particles, as cells, or a contractile vesicle, nor could 
he recognise any distinctly defined nucleus. Nor did the 
application of different chemical reagents, especially of a 
dilute solution of chromic acid — by the aid of which it is easy 
to demonstrate that the body of the Hydra is composed of 
cells, as shown by Leydig (Miill. ' Archiv,' 1854, p. 270) — 
enable him to discern any other elementary parts in the body 
