320 



MORGA\. 



[VOL. II. 



only a part of the peristome. In one series these pieces were 

 cut off, as shown by the line a-a in Fig. 4, A ; so that there 

 was a smaller and a larger piece, the former, /?, containing a 

 part of the old peristome, but not any part of the pharyngeal 

 funnel, and the latter, the larger piece, C, containing also a 



C 1 



FIG. 4. A , stentor partially contracted, cut in two at a-a into small piece, B, and larger, C ' : 

 A 1 , piece B after seven hours; B 2 , B 2 , B z , piece like B after twenty-four hours; 

 B$, />' 3 , B$, same after twenty-nine hours ; B*, B*, B*, same in part after forty-eight hours 

 (after operation). C 1 , C 1 , piece C after seven hours. 



part of the peristome as well as the funnel. The cut surface 

 of each piece is quickly closed by the bending in of the sides, 

 and the cut ends of the peristome are generally brought together 

 to make a closed ring. A foot develops on the basal end of the 

 anterior piece, B, B 1 , and a stalk is soon produced in that 

 region. This piece may remain for twenty-four hours in this 



