Food—continued 
unsuccessful sterilization of, 46 
variety of, réle of technology, 42 
Food additives, toxicity of, 46, 51, 
77 
Food and Agriculture Organization, 
23 et seq. 
Food consumption, in an Indian 
village, 26 
Food-poisoning, 46 
Food production, and population 
increase, 62 
land required, 32, 58 
Food requirements, 24 
Food technology, 37, 42 
Fracastorius, 202 
Free will, 302, 327 
Galen, 40 
Games, and social equilibrium, 125 
Gandhi, 342 
Geddes, Sir Patrick, 149 
Genetic constitution, changes in, 
255 
changing by A.I.D., 258-261 
Genetic homoeostasis, 281 
Genetics, 17, 274 
and resistance to disease, 212 
and resistance to _ infectious 
disease, 231, 235, 236 
and space travel, 354-355 
control of, 352-353, 362-363 
in modern culture, 251-252 
man-made changes, 257, 258 
present predicament, 254-258 
progress by germinal choice, 24.7— 
262 
relation of ability and reproduc- 
tion, 252, 263 
Genius, 342 
Germ-free states, 204, 234, 235, 236, 
343 
Germinal choice, 258-261, 276, 
352-353 
Glikson, Artur, 132-152 
Godwin, William, 169 
Gédel’s theorem, 181, 184 
Gonorrhoea, treatment of, 198 
Government, 376-377, 381 

Index 
Grassland, 33, 60 
Ground-nuts, 69 
Group, man’s relationship with, 324 
Hair, greying of, 232 
Haldane, J. B. S., 337-361 
Happiness, recipe for, 177 
Health, and disease, 230 
and sophisticated diets, 36, 49 
factors in, 38, 39 
Heart disease, and fats, 50 
Hedgehog, 237 
Hibernation, and memory, 311 
Hindu thought, 281 
Hippocrates, 40 
Historicism, fallacy of, 163 
Hoagland, Hudson, 299-314. 
Hobbes, Thomas, 241 
Homograft reaction, 267 
Homosexuality, 116, 296 
Housing, 144 
Human development, engineering 
of, 265 
Humanism, 377, 379, 380 
Huxley, Aldous, 10, 13 
Huxley, Julian, 1-22 
Hypothalamus, réle in reproduction, 
80, 81 
Hypothesis-making, 186 
Ideas, manipulation of, 328, 329 
Idea-systems, 5, 7, 19 
Immunological methods of control 
of reproduction, 81 
Immunology, mechanism of, 213 
Improvement, economic, and popu- 
lation growth, 32 
trend towards, 4 
Incaparina, 67, 69, 73 
manufacture of, 74 
use of, 75 
Indian philosophy, 234, 327, 358 
Indigestion, and diet, 49 
Infectious diseases, control of, 343, 
307 
drug resistance, 234 
eradication of, 198, 216, 236 
future progress in, 196 
polymorphism, 231, 235 
405 
