420 



CM. CHILD 



From forty-eight hours on, the susceptibiUty begins again to 

 increase as the pieces undergo reconstitution. At seventy- two 

 hours it is somewhat greater, at ninety-six hours still greater and 

 table 4 for one hundred and twenty hours shows that it has now 

 again become greater than that of the whole worms (cf. table 1). 



As regards the susceptibiUty of the first and second fourths, 

 tables 2 to 4 show that the first fourth is at all times more sus- 

 ceptible than the second, that is, the original axial gradient 

 (Child 12 a, 13 b, 13 c) appears in the difference in susceptibihty 

 between the first and second fourths. 



