452 BULLETIN OF THE UNITED STATES FISH COMMISSION. 

 And according to J. Lebmann — 



Per cent. 



Water 10.14 



Proteiue 73. 52 



Fat 12. 70 



Aslies aud sand ;}. 77 



As with domestic animals, so with fish, favorable results can be looked 

 for onl3' if the food is fresh and of the very best quality. The outlay 

 for this food should be as little as possible, for otherwise, taking into 

 consideration the great difficulties connected with the raising of tish, 

 the use of artificial food will hardly repay the trouble. 



I would, therefore, advise fish ciilturists to buy the necessary ingre- 

 dients and mix their own food; then they will know what they have and 

 can draw correct conclusions trom the results, and, if necessary, make 

 improvements in the food. Food bought at random has always two great 

 defects. In the first place one does not know its component parts, and 

 in the second i)lace it is possible that the component parts are of the 

 most inferior quality. 



I would strongly recommend to fish culturists the following mixture: 



FORMULA. 



TABLE OF COST. 



Practical value. 



ri, A 4. cn„ ,i„ C 44. 5 per cent, albumen — 44. 5x 16=7.121 



.Tt^i w ' P" • \ 7. 2 per cent, fat = 7. 2 x 1 6=1. 15 ( 



containing ^ 0. 9 per c<>ut. hydrates of carboii= 0. 9x 3.2 > 



Sesame cake 20 pounds, ^ | ^ P/^^". '^ P™teinB J = 9. 2 x 16= 1. 47 J 



containing \ i. Q per rent.' b'vdrates of carbon=: 4. 6 x 3.'J = 0. 14 S 



coniainin^ ( 1. 3 per cent, liydrates of carbon = l. 3 x 3.2=0. 04 



^ i 8. 61 per cent, hydiates of carbon=8. 64 x 3.2=0. 27 

 Total 



Value 



in 

 marks. 



8.29 



1.61 



.26 



0.78 



Cost 



in 



marks. 



9.30 



1.00 



.40 



1.07 



10.94 11.77 

 [$2.60] [$2.80] 



