180.
Camp Fire Girls, love of, for wild creatures, 207.
Camping parties, forest fires started by, 122.
Canada, beaver in, 179.
Canada balsam, 93.
Canals, use of water for, 87.
Cats, killing of birds by, 210.
Chesapeake Bay, fisheries of, 167.
Chestnut-tree blight, 107.
China, results of destruction of vegetation in, 79-80.
Christmas decorations, 149.
Cigarettes, forest fires caused by, 122.
Citrus canker, 109.
"City on the Plain, The," 14.
Clay, a part of soil, 58.
Clay loam, 58.
Closed season for hunting, 205.
Coal, care necessary in use of, 12;
unequal distribution of, 27;
deposits and mining of, 155-156;
waste connected with, 156-157.
Cod fisheries, 170.
Codling moth, 153.
Colorado River, mud carried by, 73;
use of water of, for irrigation, 87.
Cone-bearing trees, 98;
enemies of, 110.
Conservation, meaning of, 8.
Conservation commissions, 138.
Coon, arguments for and against the, 193.
Cotton-boll weevil, 153.
Cougar, a predatory beast, 203.
Coyotes, killing of, 152;
defense of, 193.
Crater Lake National Park, 140.

Deer, killed by cougars,