184 



REPORT OF COMMISSIONERS OF INLAND FISHERIES. 



Table No. 15. 

 Showing rate of growth of Brook's lobster, A'o. 1. 



*Period, 506 day.s. 



The observations of Brooks, on another and larger lobster, were 

 as follows: 



Table No. 16. 

 Showing rate of groivth of Brook's lobster, No. 2. 



Size after Molt. 



Per cent, of Increase. 



(?) 



May 19 



September 20. 



May 13 



October 1,3*.. . 



7^ inches. 

 7 ^ inches . 

 8x6 inches. 

 9-j?^ inches. 

 9|| inches. 



10.4 

 12.6 

 4.8 

 4.3 



Average . 



8.01 



♦Period, 414 days. 



It would appear from the facts above outlined that the average 

 percentage of increase in the length of these lobsters is very slightly 

 greater than those already mentioned in Table No. 14. It must be 

 stated, however, that the two lobsters above mentioned belonged to 

 the European species (Homarus vulgaris) , and since we know that this 

 species is naturally smaller than the American species, we might 

 reasonably expect a less rapid rate of growth; moreover the lobsters 

 in question were kept in aquaria, where, as we have noted, the rate of 

 growth would probably be a little slower than under natural con- 



