356 



INDEX. 



Theorem of Maclaurin, 194 ; of 



Carnot, 195. 

 Theoria Motus, 196. 

 Theoretical Work, 270. 

 Theory of Asymptotes, 196. 

 Atomic, 179. 

 of Chemical Affinities, 175. 

 Evolution, 1 87. 



Ccelum, 147. 

 Corpuscular, 218. 

 of the Division of the Cir- 

 cle, 195. 

 Dual, 183. 



Dynamical, of Heat, 243 ; 

 of Vortices, 247, 255, 

 Appendix VI., 230. 

 of Electricity, Single and 



Double Fluid, 221. 

 Electro-chemical, 182-2. 

 ,, of Electric Induction, 238. 

 Esthonian, 149. 

 Gastraea, 147. 

 of Laplace, 209. 

 Norman Lockyer, 214. 

 Magnetism, 233. 

 Neptunian, 49, 161. 

 ,, of Numbers, 195. 

 Parallels, 195. 

 Phlogistic, 173, 191. 

 ,, Plutonian, 49, 160. 

 of Probabilities, 195. 

 Prout, 189. 

 Recapitulation, 132, 147. 

 Symmer, 222. 

 Types, 185. 

 Undulatory, 103, 192, 194, 



217-8, 228-9. 

 Unitary, 184. 

 of Unity of Organic Com- 

 position, 131. 

 the Universe, 273. 

 Thermo-dynamic Law, 195. 

 Thermo-dynamics, 195, 244. 

 Thermo-electrical Multiplier, 239. 

 Thermology, Definition of, Appen- 

 dix AA, 273. 

 Thermometer, 58, 60, 62, 100, 203, 



220, 228, 236, 267. 

 Thermopyle, 243. 



Thomas Aquinas, 65. 

 Thomson (Sir W., Lord Kelvin), 

 213 (note), 243-4, 246-7, 254, 258. 

 Tides, 26, 102, 200 ; Kinds of, 254. 

 Tidal Power, 265. 

 Tissue (Cellular), 62. 

 Titian, 64. 



Tivoli Waterfall, 264. 

 Toleration in Islam and Christen- 

 dom, 45. 

 Tool (The), 293. 

 Tools (Machine), 262. 

 Topography, 41. 

 Torricelli [Physicist], 36, 102, 215; 



his Law, 216, 272, 283. 

 Torsion Balance, 174, 223. 

 Elasticity of, 223. 

 of Wires, 223. 

 Torture, Abolition of, 155, 304. 

 Toscanelli, 54, 97. 

 Tournefort [Botanist], 114. 

 Trade, 18, 69. 

 Tragus, 61, 96. 

 Transformation of the Earth, 18 ; 



of the World, 286. 

 Transformation of Heat into Me- 

 chanical Energy, 243-4. 

 Transformation of Mechanical 



Energy into Heat, 243-4. 

 Transmission of Energy, 264. 

 Trigonometry, founded by Hippar- 



chus, 25, 54. 

 Tripoli Library, 43. 

 Tubular Boiler, 261 ; Bridge, 262. 

 Turgot [Sociol.], 154. 

 Twilight, 36. 



Tycho Brahe, 34, 57, 97-8, 283. 

 Tyndall [Physicist], 244. 

 Types, Theory of, 185. 



UBALDI, 57, 98. 

 Ultimates (Unknowable), 288. 

 Ulugh Begh, Obliquity, 34. 

 Undulations of Light, 229. 

 Undulatory Theory of Light, 103, 



192, 194, 217, 218, 228, 230, 235. 

 Union of Logic and Mathematics, 



196. 

 Universal Laws, 286, 287. 



