292 
HAROLD’S DISCUSSIONS. 
II, 99; crow, II, 100; eggs, IV, 
70; feet, IV, 69; game, IV, 65; 
heron, IV, 63; horned lark, II, 
98 ; migration of, II, 96 ; meadow 
lark, 11, 6; nuthatch, II, 100; 
owl, II, 107; pigeon, IV, 68; 
quetzal, IV, 222; robin, I, 63; 
sandpiper, IV, 64; shore, IV, 62; 
(snow) bunting, II, 99; sparrow, 
II, 97; swallows, II, 9; wild 
geese, IV, 58; wood duck, IV, 
60; woodpecker, II, 104; wood¬ 
cock, IV, 64; wren, II, 10. 
Bitumen, formation of, 61. 
Blossoms, apple, III, 30; ash. III, 
32; cherry, HI, 30; cotton tree, 
III, 30; elm. III, 30; oak. III, 
30 ; maple. III, 31; pear. III, 30 ; 
pine. III, 30; plum, III, 30. 
Blue Island, formation, IV, 103. 
Bowlders, IV, 105. 
Breadfruit, IV, 185. 
Buffalo, IV, 228. 
Buoyancy, II, 91. 
Burdock, I, 10. 
Butterflies, IV, 212, 217 ; 273, 274. 
Calamite, 53. 
Cambrian life, 34; rocks, 34. 
Cancer, 165. 
Capillary attraction. III, 97. 
Capillary tubes, IV, 18. 
Carbon, IV, 269. 
Carbon dioxid, IV. 271. 
Carboniferous age, 50, 57, 58, 61, 62, 
63. 
Caribou, IV, 238. 
Carnivora, 80. 
Caves, IV, 78, 80, 83, 84; uses, IV, 
84. 
Cell, 218; differentiation of, 231; 
germ, 231; reproductive, 231. 
Cements of nature, IV, 99. 
Cenozoic era, 74. 
Centiped, IV, 216. 
Cephaloid, 72. 
Cereals, barley, II, 54; corn, II, 55 ; 
rye, II, 54; wheat, II, 51; oats, 
II, 52. 
Ceres, II, 48. 
Chalk formations and strata, 74. 
Characteristics, acquired, 248, 249 ; 
parental nucleus and transmis¬ 
sion of, 228. 
Chemical action, IV, 277, 278. 
Chemistry, IV, 255. 
Chlorin, IV, 256. 
Cilia, 232. 
Climate, 241, 243, 90. 
Clouds, kinds, II, 1, 142; 98,100, 
101, 102, 103, 104, 105, 106. 
Coal, 15, 49, 50, 53, 55, 57, 58, 61. 
Cocklebur, 1,11. 
Cocoa tree, IV, 176. 
Cocoanut tree, IV, 161. 
Coffee, IV, 178. 
Cohesion, III, 98. 
Cold regions, IV, 225. 
Color, adaptation and imitation, 
273, 275 ; II, 8. 
Comets, 181, 192, 193, 194, 195. 
Compounds, IV, 264. 
Constellations, II, 87, 88; 139, 150- 
168. 
Corals, IV, 140, 141, 146; 37. 
Cottony cushion-scale insect, 254, 
255. 
Cotton tree, IV, 169. 
Cow, II, 64. 
Crayfish, I, 80. 
Dallingeria, 218. 
Dandelion, I, 7. 
Delta, III, 105; of Mississippi, IV, 90. 
