Hawking, [184].
Horse, economic value to man, [57].
origin of, [58].
hoof of, [61].
field in which developed, [65].
domestication of, [66].
use in war, [67].
effect of mounted men on early peoples, [69].
future use in military campaigns, [70].
value in agriculture, [74].
mental qualities of, [75].
ready variations of, [78].
Norman variety of, [82].
geographic varieties of, [83].
Arabian variety of, [85].
Indian ponies, [86].
care of, [87].
shoeing of, [91].
influence on man, [100].
Hybrids, utility of, [96].
Insects, [190].
limited value to man, [190].
Kangaroo, [240].
Mammalia, value of class as source of domesticable animals, [149].
future domestication of, [238].
Mammals (tertiary), [150].
Mammoth, [129].
Man, his place in nature, [1].
sudden appearance of, [6].
as a destroyer, [229].
Martha's Vineyard prairie chicken, [257].