304 REPORT OF COMMISSIONERS OF INLAND FISHERIES. 



Fifth stage. Sixth stage. Seventh stage. 



Group I, 



Average length of normal lobsters 15.8 mm. 18.4 mm. 21.5 mm. 



Group II, 



Average length of regenerating 



lobsters 14.6 mm. 16.4 mm. 19.0 mm. 



It may be seen from these results that the normal and regenerating 

 specimens, in going from the fifth to the seventh stage, gained in 

 length 5.7 mm. and 4.4 mm., or 36.1 per cent, and 30.1 per cent., 

 respectively; from the records in the tables it may also be seen that 

 the former specimens molted from the fifth to the seventh stage in 

 29.1 days, and the latter specimens in 34.0 days. Accordingly, 

 within about a month, the normal lobsters had not only molted 

 sooner, but had also increased in size 6 per cent, more than the 

 regenerating lobsters. 



(3) The Rate of Growth, 



By combining the data for the length of the lobster, the increase 

 in size, and the length of the molting period for both normal and 

 regenerating lobsters an exact comparison of the effect of regenera- 

 tion upon the rate of growth can be made. For this purpose the data 

 for the rate of growth has been taken from Tables YII and VIII 

 and grouped together in Table IX. 



