Charring wood, importance of, [33], 50

Chub, suitable water for, [18]

Coarse fish, [88]-92
ova of, [90]-1

Colorado River trout, [77]

Columbia River trout, [77]

Conchifera, [12]

Corixæ, [10], [49], [63]

Covers for rearing ponds, [31]

Creatures, aquatic, serving as food for fish, [10]-2, [61]-6

Crowfoot, water, [13]