CHALK MAKERS, OR FORAMINIFERA. 39 



side of the glass cell. The extension was principally 

 in two opposite directions, though the branched and 

 variously connected films often diverged considerably, 

 giving to the whole a more or less fan-like figure." 1 



The whole method of reproduction requires further 

 investigation, since little more is known than was 

 announced in 1856, and further confirmed in 1861, 

 of the production of living young by two or three 

 species. " Remarking that an individual had become 

 stationary for several days, and enveloped, as is not 

 unusual, in a thin layer of brownish slime, Max 

 Schultze paid particular attention to it. At the end 

 of a few days, after it had become quiescent, he 

 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 by 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. 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 



1 " On Locomotion in the Foraminifera," by P. H. Gosse, in 

 "Annals Nat. Hist.," vol. xx. (1857) p. 365. 



