10 VEGETABLE PHYSIOLOGY 
they form the group known as the Myxomycetes or slime- 
fungi. One species, ithalium, is found frequently among 
the refuse of tanyards and is known as ‘ flowers of tan. 
These fungi pass the greater part of their life without 
Fig. 11.—Votvox Grogator. (After Kny.) x 120. 
A, section of a portion of the wall of the sphere. x 1000, 
possessing any cell-walls, only forming them indeed in con- 
nection with their processes of reproduction. 
A third mode of arrangement of a colony of proto- 
plasts is found in the so-called Cenocytes (fig. 12). In this 
type of structure which is represented by several very 
