GENERAL INDEX. 



Resolution of forces * . . . . 



Retarding force, friction from 



Revolving bodies without rolling, friction of . 



Rhomboidal crystals, formation of ..... 

 Right and left-handed quartz, experiments on . . , 

 Rigidity of cordage, observations on ... 



. . mathematical theory of . . , 



tables of .... 



. . works on } referred to ... 



Rings, coloured, systems of, produced by crystals . . 



splendour of, in topaz . . . , 

 possessed by certain crystals 



general laws of their phenomena . . 



produced by common light , 



positions of the optic axes for . . . 



of the Apophyllite, extraordinary system of 

 virtual poles of, in topaz . . , 



systems of in leucocyclite . . 



tints of, in Vesuvian, &c. 

 Rivers, rule for calculating the velocity of . . , 



Rochefle salt, spectra in crystals of ..... 

 Rock-cry stai, its refraction ... 

 Rollers, friction, account of Garnet's .... 

 Rolling bodies, friction of . . . . , , 



Colomb's experiments on . . 

 Roman balance, description and principles of ... 

 Rope and pulley, effect of . . , . 



Rope*pump of Vera described . , 



Ropes, oblique, and pulleys, their effect . . . 



Rules for predicting the weather by the barometer 



JRunner, or single moveable pulley, effect of . . . 



Sails of a windmill, best position of , , , 



Satellites, or moons, description of . , . 

 Saussure's cyanometer described . , . 



Savery's steam-engine, description of ... 



Saw-mill, Taylor's 



Scale for thermometers proposed by Dr. Murray . . 

 . . of Fahrenheit's thermometer compared with Wedgewood' 



Scales of different thermometers compared . 

 Science defined and classified . . 



Screw, Archimedes's, described . . . 

 Hunter's, described . . . 



. . as a mechanical power, principle of . 



.. micrometer, description of . . 



perpetual, description of . . . 

 Seat of vision investigated . . . 

 Second sight of the Highlanders accounted for 

 Sensibility of a balance, remarks on 

 Shadows, coloured, the phenomena accounted for 

 Sheaves and- block, observations on . . 

 Shortsightedness, cause and remedy of 

 Simple refraction described . . . 

 Sines, law of the, explained 

 Singfe vision, with two eyes, accounted for 

 Sketched account of the solar system . . 

 Sky, cause of the colour of, investigated 

 Sliding, friction occasioned by . . 



Smallest magnitude visible by a microscope 

 Snipe, curious network upon the bill of that bird 

 Solar rays, magnetizing power of . . , 



system, sketch of .... 

 Solid of least resistance, remarks on 

 Solids, definition of . . . 



.. application of their expansion to the arts 



table of their expansion by heat 

 Sounds, reflexion of, concerning the 



PRELIMINARY TREAT. 

 OPTICS 

 MECHANICS, t. i. 



t. ii. 



HEAT 



PRELIMINARY TREAT. 



HYDRAUL. 7. MECH.!. ii. 



MECHANICS, t. ii. . 



OPTICS . 



MECHANICS, t. ii. 

 OPTICS . . 

 MECHANICS, t. ii. 

 OPTICS . . 

 POLAR. OF LIGHT . 



OPTICS 



PREI, TREAT. 1315, 



OPTICS 



MECHANIC- 



OPTIC" 



25 

 16 

 65 

 32 

 27 

 18 



20 



16 



1 



54 

 46 

 44 

 48 

 47 

 44 

 59 

 15 

 66 

 33 

 46 

 1 

 2 



45 

 40 

 65 



