1893.] 



MICROSCOPICAL JOURNAL. 



285 



doubtful. By pushing apart the advancing edges before there 

 was time for this, the Stentor gained its freedom. This is shown 

 in Figure 5. 



The next contest that came under observation proved highly- 

 interesting and exciting. It was another battle between two 

 Amoebas and a Stentor, very nearly ending in a complete vic- 

 tory for the former. The Stentor appeared uneasy at the active 

 and persistent efforts made to encircle it. Though easy enough 

 to flee from impending danger, the attacked animalcule stupidly 



FIG. 4.— A STENTOR ATTACKED BY TWO AM(EBAS. IT ESCAPED UNHURT. 

 FIG. 5.— A STENTOR ESCAPING FROM THE CAVITY OF AN AMOEBA IN WHICH IT 

 WAS ALMOST COMPLETELY ENCLOSED. 



persisted in contracting itself into a globular mass, thus giving 

 all the advantage to its foes. A complete enclosure within the 

 dreaded cavity speedily ensued. The opposite edges were in 

 close contact, but, possibly from lack of time, did not fuse to- 

 gether. It is an interesting question if fusion between two Am- 

 oebas really takes place when capturing prey, but the writer has 

 not yet witnessed such fusion. The prisoner was now appar- 

 ently in a frenzy of terror. It loosed its foot, and continued for 

 some time to twist and roll. Presently it gave a quick jerk as 

 if experiencing a violent shock. After a second shock the Sten- 

 tor lay still for a few moments as if paralyzed, though the Cilia 



