326 
MAYNARD M. METCALF 
EXPLANATION OF FIGURES 
35 a-h Amoeboid and flagellate spores which have arisen from gemmules. 
The same spore assumes ''at will" either form. X 1590 diameters. 
36. An amoebo-flagellospore in division, the two parts being about to separate. 
X 1590 diameters. 
37 a-f An amoebospore crawling on the cover glass and assuming grotesque 
shapes. In b and c, the nucleus is shown. X 1700 diameters. 
38 a-d Changes of form of one spore which is giving up the flagellate condition 
and becoming amoeboid. X 1590 diameters. 
