/l/ The numereilB I, II, III, IV occurring occasionally in column D, refer to alternative dietsiry mixtures whose 

 conqpositions are given in column E. /3/ Food allowance for trout !« in proportion to body size and water tenqjer- 

 ature (the larger the fish, the smaller allowance in proportion to body weight and the higher the teii5)erature, 

 within limits, the greater the allowance). /5/ 1200 I. U. vitamin A and 17O I. U. vitamin D. 



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