Dytiscus marginalis, [11], [49], [58]-60, [63]
Earth in rearing boxes, [46], [93]-6
doses of, in rearing pond, [54], [93]-6
Effects of soft food on trout, [24]
Ephemeridæ, [12], [64]-5
larvæ of, [64]-5
catching larvæ of, [64]
Feeding of the fry, [42]-9
Feeding yearlings, [67]
Food, importance of, in waters, [5], [7]
Fresh-water shrimp, [10], [49], [65]
snails, [10]-2
Friends and enemies of the fish, [58]-66
Fry, feeding of, [42]-9
separating large from small, [45]
turning out of rearing box, [51]-2