Apes, 158;
susceptible to training, 210;
line from Amoeba, 231.
Appendix, vermiform, 168.
Apteryx, wingless bird of New Zealand, 44, 200.
Arachnida, 49.
Archæopteryx, a famous "link," 99.
Ares, 300.
Armadillo, 42.
"Arts of life," 226-230;
dwellings of men, utensils, 227;
history of clothing, 228;
arts of pleasure, 228-230.
Atom, carbon, 22;
nitrogen, 23;
hydrogen, oxygen, 24;
chemical, 25.
Atua, 301.