ing in terms that we understand. They are using the
language of a new age. Underneath their teaching lies the everlasting
truth. Out of their teaching will come everlasting life. Let us trust
God in the world. Let us believe that in this age he is teaching men's
lips and dwelling in men's hearts. Only so can we give to our children
the best their times can give them. If we insist in holding these men
back to our conception we but deny them the privilege of moving with
God's great procession. We make them laggards when they should be in
the front ranks, their faces lighted by a nearer and clearer vision of
Almighty truth.

INDEX

A

Acquired characters not inherited, 52.

Adaptation and purpose, 89.

Adaptation for the individual, 87.

Adaptation for the species, 125.

Advanced teaching, 291.

Agassiz and evolution, 19.

Age of the earth, 156.

Allantois of chick, 206.

American Museum of Natural History, 221.

Anaxagoras and evolution, 9.

Anaximander and evolution, 8.

Ancestry of man, 186.

Andes rising out of Pacific, 32.

Aquinas, Thomas, and evolution, 12.

Archaeopteryx, 181.

Aristotle and evolution, 9.

Armadillo and glyptodon, 29.

Artificial flavors, 161.

Artificial proteids, 161.

Artificial sugars, 161.

Ascent of man, 189.

Asexual reproduction, 194.

Augustine, Saint, and evolution, 11.

Australian mammals, 186.

B

Bank swallow's nest, 146.

Barnacles studies by Darwin, 34.

Beagle and Darwin's voyage, 25.

Beauty of human female, 127.

Biologists accept evolution, 278.

Bird colors, 131.

Bird from reptile, 122.

Bird nests, 145.

Birds of a region definite, 61.

Bird song, 135.

Blowing viper, 107.

Blue birds and frost, 61.

Bradbury, Dean, 43.

Buffon and evolution, 15.

Bumble bees, 125.

Butterfly colors, 129.

Butterfly's mouth, 95.

C

Carboniferous age, 174.

Carnivorous teeth, 124.

Caterpillars on leaves, 110.

Cave man, 188.

Cells live in water, 166.

Cenozoic age, 185.

Cicada killer, 143.

Circular nest of bird, 147.

City life in man, 256.

Clothing of birds, 101.

Coal plants, 174.

Cold-blooded animals, 99.

Color, concealing, Thayer, 115.

Concealing appearanc