THE ORGANIC CELL 
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Pandorina , there is a very great difference in the size of the 
conjugating swarm spores. In Eudorina there are sixteen or 
thirty-two cells embedded in a gelatinous matrix. Each cell 
divides by successive cleavages into sixteen or thirty-two 
cells, thus forming a new colony, which becomes free from the 
parent one. 
The process of conjugation shows a marked difference, 
A 
Eudorina elegans. 
A female colony around which antherozoids are swarming. A. Mass 
of antherozoids still united. B. Cluster of antherozoids just separating. 
C. Swarming antherozoids, some of which have penetrated into the female 
colony D. (After Goebel.) 
because the colonies become differentiated into two kinds — 
male and female. With regard to the female colonies, the 
cells are altered into egg-cells or oospheres without any further 
division. In the male colonies, each cell divides into sixteen 
or thirty-two antherozoids, which are elongated cells, each 
one being furnished with two hair -like processes attached to 
its anterior extremity. Should a colony of antherozoids 
come across one of oospheres, the antherozoids at once separate, 
pierce the envelope, and find their way to the egg-cells. One 
antherozoid blends with one oosphere, and the conjugated 
