350 



INDEX. 



Natural Sciences (Medicine, Ana- 

 tomy, Zoology, Natural 

 History, Botany), 96. 

 Selection, 283. 

 System, 115. 

 Nature a Great Teacher, 63. 



of Vision, 35. 

 Navigation, 31, 69. 

 Nebula of Orion, 199. 

 Nebulae, 261. 



in the Northern Hemi- 

 sphere, 204. 



in the Southern Hemi- 

 sphere, 210. 



Nebular Hypothesis, 209. 

 Neckam (Alexander), 52. 

 Neptune, Discovery of, 211. 

 Neptunian Theory, 44, 161. 

 Nero, 51. 



Nerves (The), 22, 27. 

 Nestorian Teachers, 28. 

 Neumann [Chemist], 185. 

 Newlands [Chemist], Law of Oc- 

 taves, 189. 



Newton, 13, 26, 272, 283 ; Acous- 

 tics, 219; [Astron.], 199; [Math.], 

 J 93 > [Physicist], Corpuscular 

 Theory of Light, 218. 

 Niagara Falls, 264. 

 Niagara, Supply of Horse Power, 



264. 



Nicholas V., 91. 

 Nicholson [Physicist], 227. 

 Nicol Prism, 230. 

 Niepce, 239, 261. 

 Nile Mud, 41. 

 Nineteenth Century, Character of, 



274-277. 



Nobili [Physicist], 224. 

 Numbers, Bernouilli's, 194. 



Theory of, 195. 

 Nutation, 203. 

 Nyaya School, 10. 



OBLIQUITY of the Ecliptic, 23, 24, 



33, 34- 



Observatories, 5, 6, 34, 43, 97. 

 Oersted [Physicist], 232, 240. 

 Oil Paintings, 53. 



Oken [Bio].], 131. 



Olbers [Astron.], 209. 



Oligarchy, 298. 



Opera, 60. 



Optics, 35, 61, 103, 217, 218 ; Defi- 

 nition of, Appendix AA. 



Oratorio, 59. 



Orbits of the Planets (Analysis of), 

 212. 



Order (Social), 290. 



Organ, 51. 



Organic Chemistry, 124, 184. 

 Group, 113. 



" Organon " of Aristotle, 10. 



Oscillation (Method of), 223. 



Owen [Naturalist, Anat, Palaeon- 

 tol.], held the Doctrine of Fixity 

 of Species, 120; Founder of the 

 Microscopic Society, 121 ; or- 

 ganised Natural History Mu- 

 seum, 121. 



Oxidation, 37, 176. 



Oxygen, 174, 176. 



Oxygen a Magnetic Body, 251. 



PAGE, 264. 



Palaeontologists, Discoveries of, see 



Discoveries. 

 Palaeontology, 116; Definition of, 



Appendix AA. 

 Palaeozoic Deposits, 164. 

 Palestrina, 56. 

 Palissy, 53, 56, 97. 

 Pallas, 209. 

 Panini [Philol.j, 151. 

 Paper, 42, 52. 

 Papin [Physicist], 219, 260. 

 Paracelsus, 55, 96, 269, 270. 

 Parallax of Stars, 199. 

 Parallels, Theory of, 195. 

 Pare, 63, 96. 

 Pascal [Math.], his Law, 192, 272, 



283. 



Pasteur [Biol.], 144, 294. 

 Pathology, 63. 

 Peace promoted by Science, 286, 



299. 



Pecquet, 63. 

 Pendulum, 34, 59, 102, 217, 245, 267. 



