HuflMATOCOCCUS. 29 



end of the cell-wall. They are con- 

 tinued beyond it as rapidly vibrating 

 flagella. 



(c) Nucleus (not visible in living specimen). 



(d) Chromatophores. 



4. Movements. Note : 



(a) Active locomotion. 



(b) The rotation of an individual on its own 



axis. 



(c) The movements of the flagella. (Try to 



find a specimen whose movements have 

 become so slow that the flagella may be 

 seen.) 



5. Stain with iodine. Look for the flagella. 

 Sketch (X 6). 



II. Smaller motile forms : microzoospores. Like the 

 macrozoospores except in regard to size and 

 cell-wall, etc. 

 Sketch (X 6). 



PLEUKOCOCCUS. 



Soak in water for a few hours pieces of bark, etc., 

 that have a green powdery coating or discolora- 

 tion. Remove some of the green layer with the 

 point of a scalpel, mount in ivater, and study 

 ivith a high power. Look for : 



1. Nucleus. 



2. Individuals multiplying by cell-division. 

 Sketch. 



