94 REPORT OF COMMISSIONERS OF INLAND FISHERIES. 



tions were also made on the -power of regeneration at different levels as 

 compared with the same process at the breaking plane. 



In the above experiments the limbs of twenty-eight lobsters were 

 mutilated. The mutilations were all made at about the same time, 

 viz., the first of August. For the purpose of comparison the limbs 

 were not only cut at the levels noted above, but in nearly everj^ case 

 some of the other legs were at the same time autotomously removed 

 at the breaking plane. In the few exceptional cases some of the legs 

 were already gone, so removal was unnecessary. During the three 

 months of observation all but seven of the lobsters moulted. In all 

 these lobsters the limbs which had been broken off at the breaking 

 plane began to regenerate in the usual manner, while of the append- 

 ages mutilated proximally or distally of this plane, only a small 

 per cent, showed any sign of regeneration; or, more exactly, each of 

 these twenty-eight lobsters had limbs gone at both the breaking 

 plane and parts which were cut at other levels; nearly one hundred 

 per cent, of the lobsters showed regeneration at the breaking plane 

 and only twentj'-five per cent, showed a similar process at the other 

 levels. 



The following tabulated data on four of these lobsters is charac- 

 teristic of the results obtained : 



