75 



Table VII series A shows an average of 16 2-7 days between moults. 

 Table VIII, series B, sliows an average of 15 days between moults. This 

 shows that the series with the greater degree of injury has an average 

 of 1 2-7 days longer between moults than the series with the lesser degree 

 of injury. 



Table IX, series A, shows an average of 13 2-3 days between operation 

 and moult, which would make 14 2-3 days between moults. Table X, 

 series B, shows an average of 15 4-5 days between the operation and the 

 moult, which would make a period of 16 4-5 days between moults. This 

 shows that the series with the lesser degree of injury has an average of 

 1 2-15 days longer period between moults than the series with the greater 

 degree of injury. An average of the two sets of observations shows prac- 

 tically no difference between the length of the moulting period of the 

 series with the greater degree of injury and the series with the lesser 

 degree of injury. In each case the series with the longer period between 

 moults has the lesser per cent, of regeneration. Conclusions : 



1. The degree of injury of the gammarus has no effect on the rate 

 of regeneration In the legs of the gammarus. 



2. The degree of injury in the gammarus has no effect on the length 

 of the moulting period of the gammarus. 



