422 



C. M. CHILD 



Susceptibility determinations twenty-four and forty-eight 

 hours (table 7) after section show a sUght further decrease in 

 susceptibiUty. From this time on the susceptibiUty begins to 

 increase as reconstitution proceeds. At seventy-two hours it 

 has increased sHghtly, at ninety-six still more and at one hundred 

 and twenty hours it is once more higher than that of the whole 

 worm. As reconstitution goes on it continues to increase. 



These sixths show another interesting feature. Comparison 

 of Lots 1 , 2 and S in table 5 shows that 2 and S are considerably 



TABLE 6 

 Susceptibility to KCN 0.001 m of one-sixth pieces twelve hours after section 



