240 



DONALD WALTON DAVIS 



TABLE 9 



This table summarizes the facts presented in tables 3 to 6, on the left ivith respect to 

 character of the spaces cut by the division plane, and on the right concerning 

 the total number of complete mesenteries formed in the corresponding regenerating 

 regions. Ou the right, specimens of table 7 are included, but those of the preceding 

 tables which had not regenerated sufficiently to show their final mesenteric formulas 

 are necessarily omitted. Only those cases are included which show clearly the 

 final formula of the regenerating region, but they are included whether or not the 

 potentially complete mesenteries icere actually complete at the time of killing 

 {p. 186). 



On the left are indicated the classes into which the regenerating regions are grouped 

 on the basis of the old bounding mesenteries. The 'frequencies' here given are the 

 numbers of cases in each class found in tables 3 to 6, and may be taken to rep- 

 resent fairly well the proportions in which divisions of the different classes 

 naturally occur. (See p. 177 for discussion.) 



Figures in italics in the right half of the table represent for each class, as given on the 

 left, the frequency of the numbers of complete mesenteries {indicated at the heads 

 of the columns) found in tables 3 to 7. 



OLD BOUNDING MESENTERIES 



NUMBER OF COMPLETE 



MESENTERIES (5-11) 



WHICH HAVE BEEN 



REGENERATED 



5 6 7 8 9 10 11 



Two complete. 



f Two non-directives 



\One directive, one non-directive. 



One complete Non-directives. 



^ . , , fOne directive, one incomplete non- 

 One incomplete { ,. .. 



^ [ directive 



Two incomplete non-directives 



One complete non-directive, one doubtfully incomplete. . 



. , f One complete non-directive. 



No unpaired mesen- „ ,. ,. 



' . , < One directive 



"I One incomplete non-directiv 



Unpaired mesenteries lacking on both sides. 



(See note). 



One complete non-directive 



One non-directive doubtfully com- 

 plete 



One directive 



One incomplete non-directive 



28 

 4 



32 



25 



17 



17 



Note. On one side a new division has passed through the boundary between 

 old and regenerating regions (p. 189). 



