S3 



GENERAL INDEX. 



Page 

 37 

 1 1 

 10 



7, 33 

 77 

 90 



Rays of light, reflected from bodies of their own colour . NEW. OPT. 



general laws of their reflexion . . . - 



interference of ...... > . 



refraction of and its laws ... 



how they become visible in their passage . POP. INT. . 



effects of their transmission through glass prisms - - 



in what manner they are refracted to the retina - . . 95 



Re-action and action, their equality a law of nature POP. INT. 11 20. MAGN. 3 



REAUMUR'S thermometer, account of .... THERM. . . 8 



Fahrenheit's and the Centigrade scales of ther- 



mometers, formulae for converting into each other . - . 10 



decomposition of the spectral colours produce white light . NEW. OPT. . 35 



Reflected colours, cause of investigated . . . POP. INT. . . 92 



motion explained and illustrated . . . -- . 13 15 



colours, Newton's scale for determining . . NEW. OPT. . . 46 



Reflecting microscopes t OPT. IN ST. . 43, 48 



telescopes . . . NEW. OPT. 10, 30. --- . 11,1518 



their peculiar advantages . . . POP. INT. . 100 



.. surfaces of cylinders, their application . . OPT. INST. . . 3 



Reflexibility of light, Newton's experiments on . . . NEW. OPT. 20 22 



Reflexion of the rays of light, general laws of . . -- . .11 



and transmission of light, fits of easy . . . -- . 44 



of aerial vibrations the cause of echoes . . Pop. INT. . . 72 



Refracted and geometrical focus, distinction between . . OPT. INST. . 7 



Refraction of light, Snellius's discovery of its laws . . NEW. OPT. . 7 



Newton's theorems respecting . . - . 33 



theory of ..... POP. INT. . 85, 86 



its effects on the apparent situation of dis- 

 tant bodies 



through lenses of different forms described --- . . 89 



of homogeneous light, law of ... NEW. OPT. . 26 



double, explained ..... - - . . 9 



Refractive power of diamond and sapphire lenses . . OPT. INST. . 39, 40 



and dispersive powers of different transparent sub- 



stances ...... -- . 25 



power and spherical aberration, in the inverse ratio 



to each other ..... -- . .12 



Refrangibility of the rays of light . . NEW. OPT. 32, 33 



Register thermometers, history and construction of . THERM. . 33 39 



of Cavendish .... - , 34, 35 



Six's ..... - . . 35, 36 



Black adder's .... - - 38, 39 



Trail's ..... -- . 39 



Keith's . - . 37, 38 



REGNIER'S metallic thermometer .... THERM. . . 29 



Relative magnetic power of iron and steel, table of . . MAGN. . 15 



with respect to distance . . - . . 16 



Representation of the proportion of the orbits of the planets POP. INT. . 



of . . of the diameters . . - 



and description of the terrestrial globe . -- - . 

 of different appearances on the passage of the 



electric fluid ........ ELECT. 



Repulsion and attraction, electrical, concerning . . 



experiments on . \ ) 1 ' 



of magnetic iron . . . MAGN. 



similar to electric . . 3, 39 



Resinous and vitreous electricity distinguished . . ELECT. . . 8, 9 



Resistance of the air, its effects on falling bodies generally ^ POP. INT. . 7 



on moving bodies . . -- - . 17, 18 



Retina^ the images of objects inverted upon ... .78,79 



in what manner the rays of light are refracted to . - -- . . 95 



Revolving camera obscura, description of ... OPT. INST. . 53 



RICHMAN, fatal consequences of his electrical experiments ELECT. . . 33, 59 



Ring, electro-dynamic, effects of .... ELECT. MAGN. . 90 



. . Saturn's, described . . . . . . POP. INT. . . 36 



Rings, coloured, phenomena of . . . . . NEW. OPT. . 41 43 



RITCHIE'S torsion-galvanometer ..... ELECT. MAGN. . 41 



HITTER'S experiments on electro-magnetism . . . , 3 



ROBINSON'S method of finding the radii of the surfaces of 



convex lenses ........ OPX, INST, 6 



