tHYLUM PROTOZOA 



47 



conjugate or undergo complete fusion, but nothing is known of the 

 result of this process or of its precise significance in this particular 

 case. 



Fic. 30.— AmoeSja. A, A. quarta; B, the same killed and stained ; G, A. protms ; D, encysted 

 specimen ; E, A. proteus ; F, nucleus of same, stained ; G^ A. verrucosa ; H, nucleus of same, 

 stained ; I, A. jiroteus, undergoing binary fission ; a, point of union of enclosing pseudopods ; 

 c. vac. contractile vacuole ; n/. cyst ; /. vac. food-vacuole : m>. nucleus (numerous in 

 A. quarto) ; psd. psoudopod. (From Parker's Biology, after Leidy, Gruber, and Howes.) 



2. Classification and General Organisation. 



The Rhizopoda differ among themselves in the character of 

 their pseudopods, whict may be short and blunt or long and 



