312 C. M. CHILD. 



54A. All with closed ends and filling with water, but ends not 

 yet expanded so as to show new tissue. 



546. All collapsed. 



5 5 A. All with closed ends and filling with water, but ends not 

 yet expanded. Condition same as in 54A. 



55B. Ends closed, but pieces contain less water than 54A 

 and 5 5 A. 



December 22 : Seven days after section : 



54A. All distended, ends expanding, new tissue visible ; ten- 

 tacular ridge just appearing. 



546. All collapsed. 



5 5 A. Similar to 54A. 



536. All filling with water, but none distended sufficiently to 

 expand the ends and show new tissue. 



December 24 : Nine days after section : 



54A. Tentacular ridge distinct, with fading pigment. 



546. All still collapsed. 



5 5 A. Similar to 54A. 



55B. All distended, ends expanded and tentacular ridge just 

 appearing. 



December 26 : Eleven days after section : 



54 A. Marginal tentacles just appearing in some specimens as 

 minute outgrowths from tentacular ridge, which is now unpig- 

 mented. 



546. All still collapsed. 



5 5 A. Similar to 54A. 



55B. Tentacular ridge with fading pigment, but less distinct 

 than in 54A ; no marginal tentacles. 



December 28 : Thirteen days after section : 



54A. Marginal tentacles 0.25-0.5 mm. 



546. All still collapsed. 



5 5 A. Similar to 54A. 



556. Tentacular ridge distinct, unpigmented in most cases; 

 in a few the earliest traces of marginal tentacles visible. 



January 3, 1903 : Nineteen days after section : 



54A. Marginal tentacles 23 mm. 



546. All still collapsed, much contracted, rounded in form. 



5 5 A. Similar to 54A. 



