108 MICROSCOPY FOB BEGINNERS. 



amcnt like the parent. In the other method the -fila- 

 ment produces from the side, as shown in Fig. 88, a 

 small oval cell, and near 

 it a narrow curved or 

 coiled tube. Presently 

 the free ends of each of 

 these cells open, and the 

 contents of the tube pass 

 into the oval cell, in 

 which a spore without 

 cilia is finally formed. 



Fis. S3. Vancheria. 



This spore is said to fall 



in the mud and to remain unchanged for many months, 

 sometimes all winter, but at last developing into another 

 Yaucheria. In some of the species the oval cells are 

 several in a cluster, and the whole, with the coiled tube, 

 is raised above the filament on the end of a short stem. 



7. CH^ETOPHOR.V (Fig. 89). 



The light green jelly-like masses into which this Alga 

 grows are found attached to submerged leaves of grass, 

 twigs, or other small objects. They are often almost 

 spherical, varying in size from that of a pin-head to that 

 of a marble. The surface is smooth, and so slippery that 

 to pick up one of these Chatfdphora jellies is next to im- 

 possible. The plant within the jelly is formed of fine 

 branching filaments usually radiating in all directions 

 from a common centre, the branches being shorter and 

 most numerous near the surface of the gelatinous mass, 



