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Blood cell, 189.

Blood serum, 345.

Boa constrictor, skull of, 289.

Calyx, 31.

Cambium, 109.

Cap of mushroom, 162.

Bodily heat, effect of alcohol on, 398; Capillaries, changes in blood in, 355;

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necessity of food, rest, and fresh Carp, anatomy of, 273.

air to, 410;

necessity of sleep to, 410.

Breathing, hygienic habits of,
mechanics of, 382;

rate of, in man, 383;

relation of exercise to, 389;

Carpel, 31.

Cecropia moth, 237.

388; Cell, animal, 27;

relation of tight clothing to, 388.
Bruises, treatment of, 360.
Bryophytes, 151, 156.

Buccal cavity, in frog, 331;
in man, 332;

openings from, 334.
Bud, defined, 100;

effect of, on shape of tree, 102;
lateral, 102;

opening of, 101, 105;
protection of, 105;
structure of, 100, 101;
terminal, 102.

Budding, 116;

in yeast, 166.

Budding hydra, 195.

Bugs, characteristics of, 246;
economic importance of, 247.
Bulb, 119.

Bumblebee, 37, 39, 249.
Burns, treatment of, 398.

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as a unit, 183;

defined, 25;

example of plant (yeast), 166;
parts of, 25, 26;

sizes and shapes of, 27.
Centiped, poisonous, 257.
Cephalopods, 267.

Cephalothorax, 215.
Cercariæ, 213.

Cerebrum, function of, 406;
position of, 405.

Chelipeds, 215, 220.

Chemical element, defined, 15.
Chemistry, defined, 15.
Chestnut, 55.

Chimney swift, nest of, 298.
Chlorophyll bodies in photosynthesis,

130.

Chloroplasts, 130.
Chromosomes, 25.

Cicada, life history of, 247.
Cigarettes, poisons in, 387.
Cilia, on paramecium, 180.
Circulation, effect of alcohol on, 360;
effect of exercise on, 360;.
in frog, 350, 351;
in frog's foot, 353, 354.

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between skeleton of man and of Crustaceans, classes of, 225;

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Cryptogams, 151.

Crystalloid, 337.

structures common to all, 226.

Cuts, treatment of, 360.

Cyclops, 225.

Cyme, 47.

Conjugation, defined, 161;
in mold, 161;

in paramœcium, 181;

in Spirogyra, 176.

Connective tissue cells, 189.

Coral, asexual reproduction in, 201; Cytoplasm, 26.

cup, 201;

economic importance of, 201;
formation of, 201;

madreporic, 201.

Coral reefs, 202.

Corky layer, use of (Exp.), 110.
Corn, production of, 62, 63.
Corolla, 31.

Damsel fly,

244.

Deer, Virginia, 315.

Degenerate crustaceans, 225, 226.
Deliquescent trunk, 102.
Delirium tremens, 411.
Dendrites, 402.

Desert conditions, 143, 145, 147.

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323.

Earthworm, locomotion, 209;

nephridia, 209, 210;

reactions of, 209;

regeneration in, 211;

respiration in, 211.

Eating, hygienic habits of, 342.
Economic importance, of bugs, 247;

of flies, 242;

of mollusks, 268;

of toads, 283.

Diet, mixed dietary the best, 321, Economic value of fruits, 62;

Digestion, defined, 330;

in corn cotyledon, 75;

in stem, 112;

of starch, 334;

organs of, in man, 330;
purpose of, 330.

Dimorphism in flowers, 46;

sexual, 235, 236, 246.
Dioecious flowers, 45.
Dipsomania, 411.

Diptera, 240.

Disk flowers, 49.
Dislocations, 379.

Division of labor, in Pandorina, 187;

in the hive, 250;

in Volvox, 187.

Dragon fly, 243.

Drawing, 13.

Drink habit, 416.
Drupe, 53.

Eagle, golden, 304.

Ear, care of, 422;
in man, 421;

inner, 421, 422;

middle, 421;

structure of, 421.

Earthworm, 208;

bilateral symmetry in, 208;

blood course of, 210;

body cavity, 210;

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comparison between hydra and, Eustachian tube, in frog, 279.

210;

Darwin on, 210;

development of, 211;

digestive tract, 209, 210;
feeding habits, 209.

Excretion, organs of, 391.

Excurrent trunk, 102.

Experiment, 12.

Eye, of insects, 230;

blind spot, 426.

Eye, defects in, 425;
focusing, 425;

internal structure of, 423, 424;
longitudinal section, 424;
section of retina, 423.

Factors, determining form of plant,
146;

determining growth of seeds, 77.
Fats, in bean, 67.

Feather, development of, 293;
structure of, 293.

Fehling's solution, formula for, 21.
Fermentation, a chemical process,
167;

bacteria in, 169;

by yeast, 166.

Ferments, digestive. See Enzyme.
Fern, economic importance of, 156;
life history of, 154;
parts of, 152.

Fertilization, defined, 34;

in fern, 154;

in moss, 158;

of flowers, 33, 34.

Fibrin, 345.

Fibrinogen, 345.

Fibrovascular bundle, defined, 88;
in dicotyledonous stem, 109;

in monocotyledonous stem, 106,
107.

Fiddler crab, 223.

Filament, 31.

Fisheries map, 276.

Fishes, appendages of, 271;

body of, 271;

bony, 278;

breathing in, 272;

circulation in, 274;

classification of, 277;
digestive system in, 273;
economic value of, 275;
egg-laying habits of, 275;
elasmobranch, 277;
ganoid, 277;

gills in, 272;

gill rakers in, 273;

lateral line in, 274;
lung, 278.

Fishes, nervous system of, 274;
senses of, 271;
skeleton of, 274;

swim bladder in, 273;
teeth in, 272.

Fission, defined, 169;
in paramecium, 181;
of a cell, 26.
Flagellates, 185.

Flower, fertilization of, 33, 35;
imperfect, 45;

irregular (sweet pea), 36;
parts of, 31;

relation to fruit, 66.
Flower envelope, 31.
Flower scar, 104.
Follicle, 53.

Food, adulterations in, 323;

carbohydrates, 318;
defined, 20;

economy, 323;

hydrocarbons, 318

inorganic, 319;
need of, 317;
of birds, 299;
proteid, 317;

storage in roots, 95;

value of mushrooms, 163;
value of nutritive, 322;
waste, 325.
Forestry, 116.
Fowls, 303.

Frog, appendages of, 279;
development of, 280;
eggs of, 281;

eye of, 279;

habitat of green, 279;

life history of, 280;

protective resemblance in, 279;

skin of, 279;

stages of tadpole life, 282.

Frond, 153.

Fruit, defined, 50;

dehiscent, 53;

distinct from seed, 55;

use of, 66.

Fruits, dry, 53;

economic value of, 62;

explosive, 60.

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