37 



ceases, and fertilization is effected. A sliort time 

 after, a cell wall is secreted. This cell {oospore) 

 fixes itself to some body, and without any period of 

 rest begins to germinate. It forms first of all a 

 transverse wall and begins to lengthen at the same 

 time. Numerous other cell divisions follow and the 

 mass of tissue thus formed puts out from the part 

 on which it rests a root-like organ of attachment. 

 The thick free end forms the growing apex. 



eti^e,>{K3i^Ki) 



