INDEX 



Ability, families of inferior, 358-362 ; 

 families of superior, 356-358 



Abrasion, meaning of, 168 



Absorption, digestion and, 125-141 ; 

 from large intestine, 138 ; from small 

 intestine, 136-138 ; in organism, 34 ; 

 in green cell, 34-36 ; stomach, 136 



Acidopholus milk, 140 



Acne, definition of, 175 



Acquired reactions, 220-221 



Acromegaly, 197 



Active immunity, acquiring, 507-508 



Activities, acquired automatic, 220-221 ; 

 inborn automatic, 215-217; kind of 

 mental, 215 ; reflex, 215-216 ; volun- 

 tary, 219-220. See also Nervous 

 activities 



Adam's apple, 179 



Adaptability, relation to health, 414-415 



Adaptations, of tissues, 88-89 ; of higher 

 plants, 69-72 



Adaptive processes, in organisms, pur- 

 pose of, 34 



Addison's disease, causes of, 198-199 ; 

 characteristics of, 198 



Adenoids, 179-180; colds result of, 475- 

 476 



Adipose tissue, use of, 81-82 



Adolescence, table of, 302 



Adrenal glands, effect of secretion on 

 body, 197-198; location of, 197; 

 relation to arterial pressure, 197—198. 

 See Addison's disease 



Adrenaline, 197 ; use of, 199 



Adrenin, effect on body, 197-198 



Afferent axon, 209 



Agar slant, inoculation of, 398 ; prepara- 

 tion of, 396-397 



Age, chronological, 229 ; mental, 228 ; 

 of earth, 378, 381 ; of science, 1-3 



Agglutination test, 465-466, 467 



Agglutinins, 465, 467, 469; in tvphoid, 

 467 ; production of, 501 ; to determine 

 presence of, 465-466; use of, 501 



Agriculture, bacteria in, 405-411 



Air, composition of expired, 183 ; com- 

 position of inspired, 183 ; tidal, 183 



Air sacs, 179 



Air tubes, 179-180 



Alcohol, effect on circulation, 168-169 ; 

 effect on nervous system, 237 



Algae, characteristics of, 33 ; classified, 



519 

 Alimentary canal, laboratory study of, 



in frog, 116; in man, 117; description 



of man's, 118, 119-120 

 Alkali, laboratorj^ problem, effect on a 



fat, 131-132 

 Allosaurus, prehistoric reptile, descrip- 

 tion of, 383 ; restoration of, 372 

 Alveolar theory, of nature of protoplasm, 



54 

 Amitosis, meaning of, 60 ; process of, 60 

 Amoeba, assimilation in, 44 ; behavior of, 



44 ; digestion of, 43 ; ingestion of, 43 ; 



irritability of, 44-46 ; laboratory 



problem on study of, 42-43 ; life 



functions of, 43 ; locomotion of, 46 ; 



regeneration of, 56 ; reproduction of, 



44, 248 ; respiration of, 44 

 Amphibia, 525-526 

 Amylase, an enzyme, 38, 131 ; amvlopin, 



131 

 Anabolism, in cell, activities in, 60; 



meaning of, 59, 187 

 Anaemia, causes, 146, 167 ; symptoms, 



147 • _ 



Anaphase, stage in cell division, 61, 62 

 Ancestry, influence in development, 310- 



313 

 Andalusian fowls, heredity in, 318-320 

 Andrews, Roy Chapman, on Mongolian 



expeditions, 385-387. See frontispiece 

 Angiospermae, meaning of, 520, classi- 

 fied, 520 

 Animal, and plant breeding, 343-354 

 Animal cell, typical, 42-52 

 Animal passage, meaning of, 508 

 Annelida, classified, 522-523 ; meaning 



of, 522 

 Anopheles, spread of malaria by, 482-484 

 Ant eater, giant, 512 

 Anthozoa, 522 

 Antibodies, agglutinins, 501 ; antitoxin, 



501 ; lysins, 501 ; opsonins, 500, 502 ; 



precipitins, 501-502 ; production of, 



146, 501 ; use of, 146 

 Antiseptics, laboratory problem to show 



effect on growth of bacteria, 401-402 ; 



use of, 4 

 Antitoxin, discovery of diphtheria, 451- 



452 ; kinds of, 501 ; preparation of 



551 



