8 
INDEX 
References are to pages 
Cluster cup stage of black stem 
rust.386 
Coal, formation of.339 
study of, in connection with 
ferns.339 
Coach or carriage horse . 129 
Coating of hairs, use to Arctic 
plants.283 
Coats of pollen grain .... 208 
Cobra, most deadly snake . 102 
Cocaine, a poison.487 
cause of disease.506 
Coccus, a form of bacteria . . 309 
Cocklebur, adaptations of . . 241 
Cockroaches, family of Orthop- 
tera.29 
Coconut, a fruit distributed 
by water.241 
Cocoon, of codling moth ... 27 
Cod, classified ...... 9 
example of bony fish ... 71 
value of, as food.423 
Codling moth, a harmful Lepi- 
doptera.43 
complete metamorphosis of . 27 
controlled by spraying . . 43 
description of.39 
destroyed by birds .... 42 
Ccelenterates, classified ... 8 
examples of.160 
described.160 ! 
Coelome of earthworm . . . 1801 
Coffee, effect on heart . . . 456 | 
Cold, a common disease . . . 448 
Cold-blooded animals .... 75 
Cold storage, purpose of . . . 243 
Coleoptera, examples of . 34 
order of insects.29 
Collar of grass leaf .... 288 
Collective fruit.239 
Colonial Protozoa.152 
Colony, hydroids.164 
Color of fungi, reason for . . 320 
Colors, use of, in flowers . . 199, 202 
Columbine, use of.297 
Communicable diseases . . . 488 
prevention of.489 
Comparison of monocotyledon- 
ous plants with dicoty¬ 
ledonous .267 
of pleurococcus and spirogyra 305 
Comparison — Continued 
of unicellular plants with 
multicellular.305 
Compass plant.291 
Complete flower, definition of, 199 
also perfect.199 
Complete metamorphosis of 
insects.27 
Complex flowers of higher 
plants. 207, 378 
Complexion, light, dark . . 459 
Complex systems of higher 
plants.378 
Composite Family.301 
Composite flowers.206 
Compound leaves, defined . . 277 
Conditions necessary for the 
growth of bacteria . 310 
for satisfactory water supply 498 
Conducting system, lack of, in 
algae.370 
Conducting tissue of pteris stem 334 
Conifers, general characteristics 341 
related forms of.345 
summary of.365 
Connective tissue, sheets of . . 435 
Conservation of energy ... 11 
Conservation of forests . 350 
Conservation of land .... 391 
Conservation of national re¬ 
sources .391 
Conservation of wild flowers . 394 
Consumption, treatment of . 491 
Contact, movement caused 291, 367, 
369 
Contagions.492 
Contractile vacuole of amoeba . 145 
Control of bacteria.313 
Cooper’s hawk, economic status 
of.115 
Copperhead snake.101 
Copper sulphate, in Fehling’s 
solution.228 
Coral.166 
Coral islands, formation of . . 166 
Coral reefs.166 
Corals, example of Coelenterata 8,160 
Cordage.262 
Core, in pome fruits .... 236 
Coriander, member of parsley 
family.300 
