^$^^^^^^^^^^^^^^^^$^$^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 



Index 



Absolute, science and the, 441 



Acquired characters, what are? 316; trans- 

 mission of, 307, 324 



Adaptation, 62, 109, in, 119, 147, 157, 

 185, 186, 281, 292, 456; — and purpose, 

 4J3; — and mechanism, 457; — con- 

 vergent, 106; — divergent, 108; — in 

 agriculture, 459; — never perfect, 152, 

 154, 159; — of birds, 154; — of flowers 

 and insects, 150; — of frogs, 154, 155; 

 — a process, 454; — or a fixed condi- 

 tion, 454; — relativity of, 152; — to 

 reproduction, 150, 151 



Adaptive values of color, 149 



Adjustability, 367 



Adjustment, 157; — mechanism of, 158 



Agassiz, Louis (1807— 1873), 140, 286 

 (portrait facing p. 112) 



Albinism, 217 



Alcohol, and heredity, 323; and injury to 

 germ plasm, 395 



Allelomorph, 269 



Ameba, 80 



Ammonites, 141 



Amphioxus, 138 



Analogy, 104, no, in, 112, 119 



Andalusian fowl, 236; — heredity of pig- 

 ment in, 239 



Anthropometry, 216 



Anti-toxin, 61, 113, 117, 30J, 457 



Archeopteryx, 134 



Aristotle (384—322 B.C.), xi, xiii, 124, 301 



Artemia, 171 



Artificial selection, 178, 336, 339, 354 



Artificial species, 185, 186 



Assimilation, 57, 422, 426 



Autopsy, 464 



Autosome, 260 



Back-cross, 239, 240 



Bacon, Francis (1560— 1626), 434 



Bacteria, 82, 117, 158 



von Baer, Carl Ernst (1792-1876), 132, 



286, 436 

 Barnacle, 138, 139, 140 

 Barriers, 361 



Bateson, William (1861-1926), 248, 250, 

 37 5 > 376; Materials for the Study of 

 Evolution, 375 



Behring, Emil (1854— 19 17), 61 



Belon, Pierre (15 17—1564), 78, 436 



Bernard, Claude (18 13—1878), 424; In- 

 troduction a la Medecine Experimentale, 

 424 



Biogenetic law, 132, 133 



Bison, 34 



Bleeding, inheritance of, 264, 319 



Blood-relationship, 112 



Blood types, 117, 220 



Blumenbach, Johann Friedrich (1752— 

 1840), 209 



Body form and disease, 211 



Brain capacity, comparative, 200 



Brain, overgrowth of, 420 



Branchipus, 171 



Bufifon, Georges Louis (1707— 1788), 281 



Burbank, Luther (1849-1926), 175, 321, 



377, 403 

 Burial customs, 463 

 Butler, Samuel (1835-1902), 309 



Camel, 34, 42, 46, 47 



Camouflage, 150 



Carcina, 108 



Carrell, Alexis (1873- ), 97 



Castle, William E. (1867- ), 250, 321, 



352, 355 



Cataclysm, 32, 38, 283 



Cell, division, 251, 254; lineage, 313; 

 structure, 251; theory, 422 



Cephalic index, 217 



Chance, curve, 160; variation, 165, 367 



Change, permanence of, 11, 13 



Chordata, 138 



Chromatin, 251, 252 



Chromosomal change, 390, 391 



Chromosome, 251, 254, 255, 256, 257, 

 260, 265, 268, 269, 272; and cell divi- 

 sion, 252; and evolution, 390; and 

 heredity, 251, 255; and Mendelian in- 

 heritance, 255; and mutation, 386; in 

 man, 258, 259; irregularities in the 



