DEVELOPMENT OF ACTINOTHRYS SOL. 109 



of tlieni was seen to open, and put forth a long process, 

 which it waved and curled about in all directions, as though 

 seeking for something ; when the process or pseudopodiurn was 

 fully extended, the body lost its globular form from being emptied 

 of its contents, and assumed that shown at Fig. 18. After a little 

 time the pseudopodiurn was again withdrawn, and the body resumed 

 its globular form as before, and slowly moved out of the field. 

 In the course of an hour five of them were seen to do the same. 

 The length of the pseudopodiurn, when fully extended, was five 

 times the diameter of the body. 



Fig. 19 shows two of the globular bodies which, on approaching 

 one another, became flattened, but did not actually touch, and again 

 passed away from each other in opposite directions, returning to 

 their globular form. They contained several Desmids. 



Fig. 20 is one that was filled with exceedingly numerous, dis- 

 tinct, and bright granules. 



Fig. 21 is one that showed a reticulated centre and vacuoles 

 which contained food. 



A very bright and translucent Amceba was also seen, with four 

 vacuoles, but no granules. It was floating through the water at a 

 quick pace. 



