Lion, effect of shots on, 3, 78-81 



energy-controlling organs of, 60-61, 



62, 82-84, 191, 203, 274 

 outburst energy of, 4, 82, 185 

 "Lion-hearted," basis of term, 86 

 Lions, effect of captivity on, 84-86, 



I50-IS4 



goiter among, 150-151 

 Liver, weight data, 284-330 

 Lopez-Herrarte, Mariano, 9 

 Lungs, weight data, 284-330 

 Lydekker, Richard, "The Game Ani- 

 mals of Africa, 6gn. 



M 



McKay, W. J. Stewart, 129, 130, 134 

 " Evolution of the Endurance Speed 

 and Staying Power of the Race 

 Horse," 13 in. 



Maji Moto Camp, Tanganyika, 42-46 

 Man, adolescence, 199, 200, 227 



adrenal-thyroid ratio, change in, 



197, 204 

 civilized, 223-265 



adaptation to climate, 234-250 

 biological principles covering liv- 

 ing processes of, 269-278 

 ceiling to development of, 278-280 

 climate, influence on, 234-250 

 diseases of, 3, 101, 135, 236-238, 



243-250 



evolution of brain, 212-215 

 factors of superiority, 224, 239, 



256, 269 



formula for survival, 279-280 

 hazards of adolescence, 258-260 

 of adult life, 260-265 

 of childhood, 257 

 of infancy, 254 



mutation as factor in, 251-254 

 organs having survival value, 213, 



224, 269, 277 

 out-crossbreeding in, 251, 265, 



270, 276 



physical inferiority among ani- 

 mals, 223 



INTELLIGENCE, POWER, 



Man, civilized, survival of action pat- 

 terns of wild man in, 206 

 training and education, 223-233 

 dawn, adaptation of energy-con- 

 trolling organs, 164, 205 

 early, action patterns based on fear, 



216 



energy-controlling organs, 36, 164, 



172, i85/., 201 j 224, 254, 26o/. 



exception to brain-metabolism law, 



210-215 

 native, sense development of, 94 



way of life, 230 

 place in energy scale, 185-206 

 weight data on, 308-311 

 Manatee, energy-controlling organs, 



183-184 



Manipulative hand, factor in develop- 

 ment of man as master animal, 179 

 survival value of, 213, 224, 239 

 Manyara, Lake, 42, 47 

 Marsupials, weight data, 304 

 Masai, 46 

 Matchem (thoroughbred), 130, 131, 



134, 135 



Mathews C. A. (see Swett, W. W.) 

 Maxwell, Marius, "Stalking Big Game 



with a Camera," 7on. 

 Maya-Quiche Indians, 9 

 Melling, Thomas, 8, 9, 175, 179, 241 

 Memory, reason and imagination (see 



Mind) 

 Mental diseases, prevalence of, 205, 



236, 250, 252, 271 

 Mental processes, physical forces 



governing, 228 

 Mercy shot, 78-81 

 Metabolic arc of energy-controlling 



system, 33-34, 194, 269-271 

 Metabolism, adaptive, 35 



of animals, 23, 59, 63, no, 171 

 basal, expressed in brain-oxidation 



law, 272 

 scope of, 35 

 of man, in tropics, 234 



unaffected by evolution, 214 

 variation with climate, 241 



342 



