190 



\\. E. ALL1.N. 



TABLE I. Continued. 



Litnnodrilus. 



hours and fifth in 24 hours. After that a group of five was taken 

 each day to the twelfth day, the remainder mi the liftrnith and 

 eighteenth days. Since the specimens h.id i<> be killed for tissue 

 study it was necessary to calculate the rate of growth from the 

 condition in successive groups after killing instead of using 

 periodic measurements of living worms. 



DA i \ . 



The following sets of measurement \\ere taken: 

 I. The total length of the regenerated pai't \\a^ me. inured by 

 eyepiece micrometer under lo\v |)o\\cr .is ilie ^|iecimeiis la\ in 



