10 



VEGETABLE PHYSIOLOGY 



the refuse of tanyards and is known as 'flowers of tan.' 

 These fungi pass the greater part of their life without 

 possessing any cell-walls, only forming them indeed in con- 

 nection with their processes of reproduction. 



FIG. 11. VOLVOX GLOBATOR. (After Kny.) x 120. 

 A, section of a portion of the wall of the sphere, x 1000. 



A third mode of arrangement of a colony of proto- 

 plasts is found in the so-called Ccenocytes (fig. 12). In one 

 of these plants, which are represented by several very 

 important seaweeds and by a large number of fungi, we 



