844 



BULLETIN OF THE BUREAU OF FISHERIES. 

 Tests of Fish Food at Craig Brook Station, Summer of 1891. 



Fed on chopped meat the entire season. 



283- 

 284- 

 28s- 

 286. 

 287- 

 288_ 

 289. 

 290. 

 291, 

 292. 

 293- 

 294- 

 29s- 

 296. 



Total. 



Date of 

 weighing 



1891, 

 Oct. IS 



Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 



Number 

 of 6sh. 



1.844 

 1.833 

 I. 840 

 1.707 

 I. 936 

 1.897 

 I. 472 

 I. 394 

 I. Sis 

 I. 801 

 I. 813 

 1.824 

 1.798 

 I. 574 



Total 

 \ weight. 



Lbs. oz. 



II 3 



10 II 



11 2 



11 4 



12 4 

 10 9 

 10 1 1 



7 13 



10 9 



9 14 



10 3 



10 IS 



9 II 



9 9 



Average 

 weight. 



Grains. 



42-47 



40 



42 



46 



44 



39 



SO 



39 



24. 548 



146 6 



41. 76 



Fed on fly larvae from June 22 to October 29. 



Lot no. 



279-- 

 280., 

 281.. 

 282.. 

 297-- 

 298- _ 

 299-- 

 300__ 

 30I-- 

 302,- 

 303-- 

 304-- 

 30S-- 

 306-- 

 307-- 

 308- - 

 309- - 

 310-- 

 31I-- 

 312-- 

 313-- 

 314-- 

 315-- 

 3i6_. 

 317-- 



Total. 



Date of 

 weighing. 



Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 



Number 

 of fish. 



.387 

 .870 

 .855 

 ,887 

 . 719 

 994 

 . 707 

 .864 

 .571 

 .629 

 .646 

 . 767 

 , 691 

 . 284 

 ■ 775 

 . 763 

 .628 

 .664 

 . 690 

 ,048 

 . 752 

 .754 

 ,814 

 ,841 

 .836 



Total 

 weight. 



Lbs. oz. 



12 15 



12 10 



8 12 



12 13 



13 5 

 12 o 

 12 7 

 12 13 

 12 10 

 II 9 



ID I I 



14 2 



13 6 



13 o 



13 6 



13 2 



15 o 



14 o 



14 2 



14 9 



14 10 



14 6 



Average 

 weight. 



Grains. 

 50.78 

 SI- 

 44- 

 47- 

 51- 

 60. 

 53- 

 49- 

 53- 

 53- 

 54- 

 50- 

 47- 

 S8- 

 55- 

 53- 

 55- 

 56- 

 54- 

 51- 

 55 

 56- 

 56- 

 55- 

 54- 



53-09 



Thus the growth of the fish fed with the fly larvae for about four months 

 exceeded that of the meat eaters by 27 per cent. 



For further illustration of the potency of fly larvse in promoting growth, I 

 will cite the record of 13 lots of Atlantic salmon fingerlings that were fed in 

 1895, 6 lots on fly larvae exclusively after July 8 and 7 lots wholly on chopped 

 meat of various kinds. In all other respects the treatment was very closely 

 the same in all cases. The essential facts are embodied in the following table: 



Tests of Fish Food at Craig Brook Station, Summer op 1895. 



