A HISTORY OF SCIENCE 



coverer of the ape-man fossil 

 on the island of Java, iii. 113; 

 discovers the skull and thigh- 

 bone of the ape-man of Java, 

 v. 173; the "missing link," v. 

 174; man's line of descent 

 clearly traced by discoveries 

 of, v. 176. 



Ductless glands, their functions 

 discovered by Claude Bernard, 

 iv. 137. 



Dufay, Cisternay, electrical ex- 

 periments, ii. 267; discovers 

 "vitreous" and "resinous" 

 electricity, ii. 270. 



Dujardin, contents of cells named 

 "sarcode" by, iv. 124. 



Dumas, Jean Baptiste, his school 

 of physiological chemistry, iv. 

 128. 



EARTH'S, the, ultimate fate, v. 

 212; future life of, v. 213. 



Earth's crust, the, computation 

 as to the age of, v. 210; es- 



^ timated thickness of, v. 212. 



Ecole Polytechnique, Paris, dis- 

 covery of "radium" at, v. 100. 



Economic condition of Europe, 

 its influence on science in the 

 dark age, ii. 6. 



Egg-cell, contents of, v. 227. 



Egypt, the first dynasty, i. 31; 

 the building of the pyramids, 

 i. 32; three seasons of, i. 36. 



Egyptian antiquities captured 

 by the English, v. 5. 



Egyptian science, the summer 

 solstice corresponded with the 

 rising of the Nile, i. 34; the 

 year divided into twelve 

 months of thirty days each, i. 

 35; the three seasons, i. 36; 

 the fixing of New Year's day, i. 

 37; the difficulties concerning 

 the unreckoned quarter of a 

 day, i. 38; efforts to reform 

 the calendar, i. 40; arbitrary 

 signs of the zodiac, i. 41; 

 conceptions concerning the 

 earth, sky, etc., i. 42; the 

 recognition of the pulse, i. 51; 



practical mathematics, i. 52; 

 science as science was un- 

 known, i. 55. 



Egyptian seasons, three in num- 

 ber, i. 36. 



Egyptian temples, oriented with 

 reference to the point at which 

 the sun rises on the day of 

 the summer solstice, i. 34. 



Eighteenth - century medicine, 

 iv. 182-244. 



Eleatic School, founded by Xe- 

 nophanes, i. 114. 



Electric light, Sir Humphry 

 Davy's experiments with, iii. 

 234. 



Electricity, the first current 

 passed through a wire by 

 Oersted, iii. 236; its relation to 

 magnetism, in. 238; the dis- 

 covery of the principles of 

 electro - dynamics, iii. 239; 

 the first electro-magnet, ibid.; 

 experiments of Michael Fara- 

 day, iii. 243; the first storage 

 battery, iii. 246; Seebecle's 

 battery, iii 247; the "Hertz- 

 ian Waves," now used in 

 wireless telegraphy, iii. 247; 

 Professor Thompson and the 

 nature of, v. 93; relation of 

 gases to the conduction of, 

 ibid.; atomic character of, v. 

 96; regarded as a form of 

 matter, v. 97. 



Elixir of life, ii. 124, 131, 136. 



Embalming the dead, a purely 

 religious observance, i. 50; to 

 prevent the spirit's return to 

 torment one, i. 54. 



Embryological development, the- 

 ory of, v. 156. 



Embryology, studies in, by Von 

 Baer, Muller, and Carpenter, 

 iv. 122. 



Empedocles, one of the great 

 Italic leaders of thought, i. 

 114; a practising physician, i. 

 133; his work as a sanitary 

 engineer, i. 134; his idea of 

 the impersonality of God, i. 

 135; his knowledge of em- 



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