GENERAL INDEX. 



Percussion, force of, applied to the wedge .... 



Permanent doubly refracting structure to glass, on the communi- 

 cation of .....,. 



Perpetual lever, or axle in wheel . . . 



screw, a mechanical power . < . . 

 Persian wheel, description of that machine .... 



Perspiration, curious experiments on its cooling effect . . 

 Petrolium, elastic force of the vapour of .... 



Phenomenon of boiling explained ..... 



of freezing of water ..... 



of the mirage ...... 



Phenomena of the polarisation of light described . . * 

 of coloured rings, general law of ... 

 of Glauberite ....... 



of images in calcareous spar explained . . 

 Philosopher, the term defined ...... 



Philosophical balance described ..... 



Philosophy, moral and natural, distinguished .... 



mechanical, objects of . . . \ , 



Physics, or natural philosophy, objects of . . . . . 



Physical astronomy defined ...... 



and mathematical truths distinguished . . . 

 properties of the prismatic spectrum . . 

 Physiology, animal and vegetable, explanation of the terms 

 Piles, machine for driving, described .... 



Pinions and wheels, systems of . . . . 



Pipes, discharge, proper form of ..... 



. . velocity of water in . . . , . , 

 table for calculating their contents . . . 



suction or feeding, in pumps, proper size of . . . 

 Pivots, friction of bodies turning on, considered ... 

 Plane, inclined, a mechanical power, considered 

 Planet and sun wheel, Watt's, described . 

 Planets, description of their orbits, &c. .... 



Plates, thin, thick, or double, the colours of ... 



Newton's tables of 



MECHANICS, t. ii. 



POLAR. OF LIGHT 

 MECHANICS, t. ii. 



HYDRAULICS 

 HEAT . 



HYDROSTATICS 

 HEAT . 

 OPTICS . . 



POLAR. OF LIGHT 



35 



Page 



. 43 



. 52 

 22 

 47 

 J-J 



. 55 

 51 

 18 



. 43 

 5659 



. 7 

 27 



. 33 

 61 



PRELIMINARY TREAT. 

 MECHANICS, t. ii. . 

 PRELIMINARY TREAT. 



17 

 2 

 11, 12 



____B,U 



- 7 

 OPTICS . . 28 



PRELIMINARY TREAT. 11, 12 

 51 

 27 

 2 

 5 



22 

 21 

 14 

 40 

 63 



MECHANICS, t. ii. 

 HYDRAULICS 



PNEUMATICS 

 MECHANICS, t. iii. 

 t. ii. 



of glass, combination of different doubly refracting 



PRELIMINARY TREAT. 13 17 

 OPTICS . . 3337 



, - . . 35 

 POLAR. OF LIGHT . 55 



Pneumatics, definition and objects of 



works on, referred to . . . . . 



Point, working, in machinery, explained .... 

 Points, boiling, of water under different pressures . . , 



table of 



of suspension in a balance, concerning the . . . 

 Polarisation of light, list of works on . . . 



. . phenomena of, described . . 

 . . . . researches on by M. Malus . . 



moveable, Biot's theory of . . . 

 angle of in different substances 

 at the second surfaces of bodies . 

 . . . . at the separating surfaces of two bodies . 



by successive reflections 



by ordinary refractions . . 



experiments on .... 



by double refraction . . , 

 and refraction, difference between . 



circular ........ 



. . . . in Quartz . . . . 



in Amethyst . . . . 



in fluids ...... 



Polarised light, in what it differs from common light . . 



how obtained . . 



after it has suffered refraction . . 



apparatus for experiments on ... 

 ' .. colours produced by the action of crystallised 

 bodies upon ...... 



r. of the colours of .... 



. theory of ...... 



jiterference of, experiments upon . . 



PREL. TREAT. 19. HYDROST. 1. 

 PNEUMATICS 



MECHANICS, 

 HEAT 



t. i. 



MECHANICS, t. ii. 

 POLAR. OF LIGHT 



P.NEl-M. 2 



. 31, 32 

 2 



49 

 . 50 



14 



. 64 

 . 7 

 9 



. 37 



9 



. 10 



11 

 . 11 



13 

 . 37 



14 

 . 29 



41 

 . 41 



42 

 . 45 



8 

 . 8 



12 

 1518 



1820 

 36 



. 37 

 37 



D2 



