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 Bedbug, 92, 93.

Bee, bumble, 89; honey, 88.

Beebe's experiments, Dr., 113.

Beef, 111; tea, 111.

Beetle, 90, 91.

Berry, 167.

Biennial plant, 17.

Big-headed turtle, 149.

Bilateral, 34, 49, 98.

Bile, 105.

Bill of bird, 151.

Biology defined, 1,  9.

Birds, 150.

Blind spot, 151.

Blood, 58; quantity of, 55; of insects, 78.

Blood vessels, 52; control of, 58.

Board of Health, 163.

Boll weevil, 95, 96.

Boll worm, 95, 96.

Bones, 29; composition of, 31; growth of, 14, 36; forms of, 28, 29, 34; structure of, 30.

Bony tissue, 13.

Borax, 93.

Brace cells, 67.

Bracts, 134.

Brain, 122; coverings of, 125; of fish, 118.

Branch, 111,  9.

Breathing, forms of, 80; of bird, 161; of insect, 76; through mouth, 85.

Breeding, plant, 7, 8.

Bronchial tubes, 75.

Bruises, 62.

Bryophytes, 181.

Bud propagation, 121.

Budding, 127, 128.

Buds, 72, 82, 87, 111; flower, 115; fruit, 115.

Bureau of entomology, 95.

Burns, 24.

Burs, 172, 174.

Bushes, 191,  171.

Butterfly, 83.

Cabbage, 113,  95.

Cabbage butterfly, 84, 86, 87.

Callus, 56.

Calyx, 133.

Cambium, 63, 65.

Camel, 214.

Candle, xv, 5.

Cane sugar, 92, 104.

Capillaries, 52, 53, 56.

Capsule, 165.

Carbohydrate, 95,  91, 95.

Carbon, vii, xviii, 92.

Carbon, dioxid, 24,  22, 93, 106,  60, 76, 81, 132; monoxid, 85.

Carnivorous, 99,  111.

Carp, 112, 117, 123.

Carpel, 136.

Cartilage, 13, 35.

Castor bean, 24.

Cat, 184.

Caterpillar, tent, 84.

Catkin, 158.

Caucasian, 1, 2.

Caulicle, 20, 22, 25.

Cedar apple, 194.

Cell, 42, 63, 145, 176,  6, 7,  5, 6.

Celom, 46.

Cephalopod, 106.

Cerebellum, 122, 124.

Cerebro-spinal system, 128, 129.

Cerebrum, 122, 125, 126.

Chelonia, 143.

Chemistry, xv.

Chemical symbols, xv.

Chest, 32.

Chewing, 90, 101.

Chimpanzee, 219, 221.

Chirping, 66.

Chitin, 77.

Chlorophyll, 86, 94, 101, 183, 186.

Cholera, 160.

Choroid, 150, 152.

Chyme, 103.

Cigarettes, 67, 86.

Cilia, 14, 20, 101, 103,  76.

Ciliated chamber, 17.

Cion, 125.

Circulation, 51; and breathing, 58; and exercise, 67; hygiene of, 68; in ameba, 12; in insect, 77; in fish, 117; portal, 60, 105; pulmonary, 60; renal, 60.

City, 4.

Cladophylla, 100.

Clam, hardshell, 104; softshell, 104.

Class, 9.

Classification, of animals, 8, 125; of birds, 177; insects, 82; mammals, 193.

Cleft graft, 126.

Cleft leaf, 75.

Cleistogamous, 151.

Click-beetle, 91.