42 GENERAL INDEX. 



Page 



Test-objects for microscopes ...*., OPT. INST. , . 49 



Theorems, Newton's, concerning refraction , . . NEW. OPT. . 33 



Theories of the nature of light . . . 9 



of the rainbow ....... . 4, 5 



of electricity ELECT. 10 14, 60 62 



of magnetism ....... MAGN. . 32 4 1 



general observations on . . . . 96 



of electro-magnetism ..... ELECT. MAGN. 79 92 



Theory, magnetic ....... . 79 81 



of the winds explained POP. INT. . 69 



of the trade-wind ...... . . 70 



of the Monsoons ...... . 70 



of the sea and land breezes .... , 70 7 1 



of the sonorousness of bodies .... . .71 



of the nature of light ..... . 74 75 



of reflected colours ...... . .92 



electro-dynamic of Ampere .... ELECT. MAGN. 81 92 



induction of magnetism, explained by . 87 



of colours, Newton's NEW. OPT. . 31 



of the undulations of light, Newton's . . . . 63 



of achromatic telescopes ..... OPT. INST. . 19 



of the single microscope ..... 33 



of the compound microscope .... . . 43 



of galvanism, by Du Fay ..... GALV. . . 3 



byVolta . 31,32 



Theories of Galvanism, electrical and chemical . . . . . 1 9 20 



Thermometer, history and construction of ... THEKM. . 1 10 



the first made by Santorio, described . . . . 2 



improvement of, by the Florentine academy 



byDrebbel . . . . . 2 



with glass globules, described . . . . 



Boyle's, described ..... . . 3, 4 



(oil) of Newton, described ' . . . . , 



Roemur's mercurial, described ... . . 



Amonton's . . . . v. , . . . 6 



objections to . . \ . . 8 



Craqtiius's ...... . . 8 



centigrade, or Celsius's . . . , , . . 9 



Reaumur's . . . . . . . . 8 



Hales's . . . . . . . . 9 



De Lisle's, used in Russia .... 



De Laland's proposed ... . 



Thermometers, precautions requisite in the construction . . . 



effects of age on .... . . 



of atmospheric pressure on . . 



directions for filling .... 



graduating the scales . . 



perfect vacuum in, not essential . . 



tables of correspondences of various scales 

 Thermometer, Register, history and construction of . 

 Cavendish's described 

 Six's . 



Keith's . ... 



Black adder's 

 Trail's . 



Differential, history and r 

 Leslie's <1< 

 DeF>i>- 

 METALLINE, 1>- 



. 



IA 



by IJourtet J|f 



peculiar applications yr^M . "* 



air of Kinnersiey , . . 



statical by Gumming "& TJIKHM. . .*< 7 



balance, by Kewley " , , . 47; 48 



barometrical by Wollastou. . r . . 4, 49 



