branching are all determined by the gonidia. The 

 details are as follow : — 



1. The branch increases at the apex by the trans- 

 verse division of a gonidium which forms the 

 apical cell of the branch and by the longitudi- 

 nal growth of the hyphee. 



2. The cells produced from the apical gonidium 

 divide parallel to the long axis of the branch. 



3. New divisions take place in different directions, 

 and thus groups of gonidia arise at some dis- 

 tance below the apex. 



4. A few hyphse follow the longitudinal growth 

 and these grow within the gelatinous en- 

 velopes which are evidently derived from the 

 gonidia. 



5. A.t a considerable distance behind the apex 

 new hjrphae put forth lateral branches which 

 penetrate between the single or grouped 

 gonidia, and this increases the branch in 

 thickness. 



6. When a lateral branch is about to be formed 

 one of the exterior gonidia lengthens in a 

 direction at right angles to the axis of the 

 parent branch. This becomes the apical cell 

 of the lateral branch, and produces new cells 

 by transverse division. 



7. Branches of the adjacent hyphae turn in the 

 same direction and behave in relation to the 



