AMONG SIMPLE SARCODE ORGANISMS. 



Fig. 8. 



409 



Biflophrys Archeri. 

 A, lateral view : a, brilliant j'ellow fattj^ body ; c, c, c, contractile vacuoles ; 

 n, nucleus ; o, o, the two opposite pseudopodial orifices. B, a group composed 

 of four segments showing the mode in which the so-called cystophrys-heaps 

 are formed. (After Hertwig and Lesser.) 



with its nucleolus, while several contractile vacuoles are distri- 

 buted through the sarcode. 



The observations of Hertwig and Lesser have led them to the 

 conclusion that the Diplophrys is multiplied by a process of con- 

 tinuous binary fission, the resulting brood remaining for some 

 time united to one another in little heaps (fig. 8, B). They tbink 

 that the individuals which thus become divided are destitute of 

 shells. They have further convinced themselves that what Archer 

 describes as an independent organism under the name of^^Cystophrys 

 oculea " is nothing more than one of these heaps of young Diplo- 

 pTirys, whilst they also show that G-reefi" was equally in error 

 when he supposed that the Diplophrys was a development stage 

 of the heliozoan Acanthocystis spinifera. 



On fresh horsedung kept under a bell-glass in summer Cien- 

 kowski has seen minute yellow globules of the size and appearance 

 of a mucor sporangium. When these little globules are touched 

 under the microscope, they may be seen to break up into a 

 multitude of oval or lenticular corpuscles, which scatter them- 

 selves over the field. These are cells containing a nucleus, one 

 or two contractile vesicles, and a yellow pigment-globule. "We 

 may perceive in them a slight jerking motion, while on each 

 end one or two long pseudopodia have become apparent. After a 

 time the cells become united to one another in chains by their 



