280 



INDEX 



Dragon Town, 131 

 Drink, relative importance of, 105 

 Drosophila, mutations of, 153 

 Drought, eflPect in Australia, 139; 



effect on evolution, 108; 



in Palestine, 220; 



in 14th century, 135 

 Dryness, effect of, 85 f . ; 



effect on school children, 99 ff. ; 



effect on skin, 270 

 Dysentery, deaths from, 58 



Earthquakes in 14th century, 136 

 Economic conditions, effect on Jewish 

 physique, 170 ff.; 



in ancient Rome, 192 ff. 

 Economic cycles, causes of, 26 ff . ; 



in foreign countries, 43 ff. 

 Education, as a panacea, 16 

 Egypt, conquests of, 227 

 Elephant, mutations of, 149 

 Eliot, Sir Charles, cited, 208 

 Energy, distribution of, 229; 



relation to climate, 229 

 England, economic cycles in, 45, 54; 



energy in Great War, 235 f.; 



in 14th century, 134; 



ravages of plague in, 137; 



variations in deathrate, 30 f. 

 English, complexions of, 270 

 Environment, effect on bodily form, 

 180; 



vs. Heredity, 184 f. 

 Eocene mammals, 257 f . 

 Epidemics, deathrate from, 60 

 Eskimos, effect of climatic changes 



on, 132 

 Eugenics, 19, 22 

 Euphrates College, 221 

 Europe, cavemen in, 122; 



climate in Glacial Period, 119 f.; 



climatic advantages of, 145; 



effect of glaciation in, 140; 



glacial climate in, 144 f.; 



Great Plague in, 136 ff.; 



prehistoric art in, 122; 



prehistoric races in, 119 ff. 

 Evaporation, latent heat of, 272 

 Evolution, defined, 17; 



mental, 124 ff. (see Mental Evolu- 

 tion) ; 



of man's animal ancestors, 107 ff . ; 



recent changes in human, 18 f . ; 



the voyage of, 105 ff. 

 Ewing, cited, 156 

 Exports, in Germany, 48 

 Extremes, importance of, 166 f. 



Factory operatives, curve of activity, 



156 

 Fairchild, H. P., cited, 44 

 Falkner, table of prices, 38 

 Famine, among Arabs, 215 f . ; 



deaths from, 58; 



in ancient Rome, 198, 205; 



in 14th century, 134 f. 

 Famine fever, 135, 138 

 Ferrero, G., cited, 190 ff. 

 Finland, seasonal variations in death- 

 rate, 61 f., 71 

 Fish, asymmetry among, 163; 



evolution of, 108 f. 

 Fishberg, M., cited, 171, 173, 180 

 Fisher, Irving, cited, 59 

 Fisk, E. L., cited, 59 

 Floods, in mediaeval Europe, 132 f. 

 Food, relative importance of, 105 

 Fourteenth century, climate of, 130 ff. ; 



in Italy, 146 f. 

 France, business cycles in, 43; 



climograph of, 64 ff. ; 



deaths in, 249 ff. ; 



energy in Great War, 235 f . ; 



ravages of plague in, 137 

 Freeman, Dr., cited, 96 

 Fuel Administration, United States, 

 272 



