xlii 



INDEX OF TECHNICAL TERMS. 



Gravitate, b. 171 



Habitations (of plants), c. 621 

 Haecceity, a. 338 

 Hakemite tables, a. 239 

 Halogenes, c. 204 

 Haloide, c. 375 

 Harmonics, acute, b. 348 

 - grave, b. 350 

 Heat, b. 520 



latent, b. 554 



Heccaedecaeteris, a. 139 

 Height of a homogenous atmo- 

 sphere, b. 344 



Heliacal rising and setting, a. 158 

 Heliocentric theory, a. 380 

 Hemisphere of Berosus, a. 213 

 Hollow months, a. 140 

 Homoiomeria, a. 66 

 Horizon, a. 158 

 Horoscope, a. 316 

 Horrour of a vacuum, b. 65 

 Houses (in Astrology), a. 316 

 Hydracids, c. 159 

 Hygrometer, b. 577 

 Hygrometry, b. 519 

 Hypostatical principles, c. 123 



latro-chemists, c. 124 

 Ideas of the Platonists, a. 61 

 Ilchanic tables, a. 238 

 Impressed forces, b. 86 

 Inclined plane, b. 9 

 Induction (electric), c. 17 

 Induction (logical), a. 6 

 Inductive, a. 6 

 Inductive charts, a. 13 

 Inductive epochs, a. 12 

 Inflammable air, c. 142 

 Influences, a. 294 

 Intercalation, c. 121 

 Interferences, b. 427, 439 

 Ionic school, a. 24 

 Isomorphism, c. 245 

 Isothermal lines, b. 533; c. 590 

 Italic school, a. 24 



Joints (in rocks), c. 589 

 Judicial astrology, a. 317 

 Julian calendar, a. 135 



Lacteals, c. 448 



Latent heat, b. 499 



Laws of motion, first, b. 23 



Laws of motion, second, b. 37 



third, b. 43 



Leap year, a. 133 

 Ley den phial, c. 14 

 Librations (of planets), a. 443 

 Libration of Jupiter^ Satellites, 



b. 227 



Limb of an instrument, a. 213 

 Longitudinal vibrations, c. 364 

 Lunisolar year, a. 138 

 Lymphatics, c. 449 



Magnetic elements, c. 58 



equator, c. 52 



Magnetism, c. 49 

 Matter and form, a. 57 

 Mean temperature, b. 532 

 Mechanical mixture of gases, b. 509 

 Mechanico-chemical sciences, c. 5 

 Meiocene, c. 577 

 Meridian line, a. 215 

 Metals, c. 201 

 Meteorology, b. 518 

 Meteors, a. 80 



Methodic school (of medicine), c. 425 

 Metonic cycle, a. 142 

 Mineral alkali, c. 126 

 Mineralogical axis, c. 588 

 Minutes, a. 215 

 Miocene, c. 577 

 Mollusca, c. 492 

 Moment of inertia, b. 8 1 

 Momentum, b. 50 

 Moon's libration, b. 1 1 1 

 Morphology, c. 475, 478 

 Moveable polarization, b. 462 

 Multiple proportions (in Chemis- 

 try), c. 162 



Music of the spheres, a. 71 

 Mysticism, a. 281 



Nadir, a. 245 



Nebular hypothesis, c. 531 



Neoplatomsts, a. 291 



Neutral axes, b. 418 



Neutralization (in Chemistry), c. 1 25 



Newton's rings, b. 414, 488 



scale of colour, b. 414 



Nitrous air, c. 143 

 Nomenclature, c. 340 

 Nominalists, a. 347 

 Non-electrics, c. II 

 Numbers of the Pythagoreans, c. (>4 

 Nutation, b. 266 



