338 



INDEX. 



Doctrine of Organic Evolution, 

 128, 139, Hi- 

 Darwinism in the Present Day, 143. 

 Daubenton [Anat.], 118. 

 Davy [Chemist], 243, 248 ; Elec- 

 trolysis, 181 ; his two Laws, 181 ; 

 Safety Lamp, 181 ; Electricity 

 an Illuminant, 182, 226; Photo- 

 graphy, 182. 

 Decay of Belief in Witchcraft, 302, 



303- 



Decomposition of Light, 218. 



Vapour by Light, 



257. 



Sound, 246. 



Deductive System of Plato, 9. 



Definition of Acoustics, App. AA. 



Anatomy, 



Anthropology, 



Astronomy, 



Barology, 



Biology, 



Botany, 



,, Catoptrics, ,, 



Chemistry, 



Diffraction, 



Dioptrics, 



Dynamics, 



Electrology, 



Geography, 



Geology, 



Hydraulics, 



Hydrodynamics, 



Hydromechanics, 



Hydrostatics, ,, 



Kinematics, ,, 



Kinetics, 



Mathematics, ,, 



Mechanics, ,, 



Optics, 



Palaeontology, 



Philology, 



Physics, 



Physiology, 



Sociology, 



,, Statics, 



Thermology, 



Zoology, 



the Sciences, 



Degree, 33, 56, 60. 

 De la Rive, 264. 

 Delisle [Astron.], 202. 

 Democracy, Rise of, 300. 

 Democritus, Discoveries of, 20. 

 De Morgan [Math.], 196. 

 Denmark, 282. 

 Density of the Earth, 223. 

 Deposits, Fluvial and Marine, 164; 



Palaeozoic, 164. 

 Descartes [Math.], 191, 272, 283, 



Appendix VI. 

 Descriptive Geometry, 195. 

 Despotism, 298. 

 Despretz, 241. 



Deviation from Boyle's Law, 241. 

 Dewar [Physicist], 256. 

 Dialysis, 185. 

 Diamagnetism, 237. 

 Dias, 55. 



Diathermancy, 239. 

 Dictionaries, 43. 

 Didactic Poems, 71. 

 Diderot, 283. 

 Dietetics, 40. 



Differential Calculus, 193. 

 Diffraction, 217 ; Definition of, 



Appendix AA. 

 Digester, 219. 

 Diogenes Laertius, 6, 9. 

 Diophantus [Algebra], 33. 

 Diopters, 34. 

 Dioptra (The), 15. 

 Dioptrics (Apparatus), 233; Defini- 

 tion of, Appendix AA. 

 Diorama, 261. 

 Discoveries of Anatomists, 22, 27, 



38, 57, 60, 62, 63, 



96, 1 1 6. 



Anthropologists, 148. 



the Arabs, 46. 



Astronomers, 5-9, 



21-23, 25, 26, 33, 



34, 54-58, 86, 97, 



98, 100, 102, 198. 



Biologists, 37, 127. 



Botanists, 41, 113. 



Chemists, 37, 38, 



55,57,60,82,172. 



