24 



GENERAL INDEX. 



Electric excitation, phenomena of . " . 



attraction and repulsion, phenomena of 

 experiments on 

 similar to magnetic . 



fluid, hypotheses concerning .... 



whether there be one or two fluids 

 phenomena observed on its passage or trans- 



EI.KCT. 



MAGN. 

 ELECT. 



ference 



velocity of the transmission of 



the sound which accompanies its transference 



variously modified 



. . representation of the pencils and stars of light, 

 visible on its escape or entrance from or to a pointed body 

 . . representation of the cones passing from a posi- 

 tive to a negative point ...... 



. . objections to the theory of a single fluid . 



. . light has the same properties as common light 



. . its brilliancy proportioned to the conducting 

 power of the body through which it passes 



. . its colours vary with circumstances . . 

 . . whether it actually proceeds from the fluid itself 

 . . . . elicited by the fracture of Prince Rupert's drops 



. . exhibited in the combustion of charcoal . 

 Electric spark, its zig-zag progress in a long passage 



and lightning, analogy between . 

 shock, extraordinary examples of its communication 

 . . . . received from different species of fishes 



battery, construction of ..... 



. . . . and galvanic battery, different effects of . 



machines, various kinds of described 



Winkler. the first who used cushions for 

 Nairn's described .... 



. . . Ingenhouz's described .... 



peculiar odour proceeding from when 

 wrought ........ 



discharge through a steel bar renders induced mag- 

 netism permanent ....... 



induction analogous to magnetic induction 

 effects of galvanism ..... 



theory of galvanism ..... 



columns of De Luc and Singer 



air-thermometer described ..... 



stone, or Lapus electricus, described 



qualities of various stones .... 



currents, mutual actions of .... 



parallel rectilineal .... 



inclined rectilineal .... 



terminate ..... 



diverging and converging 



situated in different planes 



rectilineal and curvilineal . 



circular . . . . . . 



transmitted by perfect conductors are con- 

 tinuous . . . . . . . ' . 



tend to produce currents in a similar direc- 

 tion in other bodies ....... 



Electricity, the phenomena first generalized by Gilbert 

 early cultivation of by the Royal Society . 

 distribution and transference of 

 conductors and non-conductors of . . . 

 insulation of ...... 



shape of bodies most favourable for retaining 



vitreous and resinous distinguished 



induction of explained ..... 



theories of ...... 



Franklin's theory, amended by ^pinus and Ca- 



GALV. 

 ELECT. 



GALV. 

 ELECT. 

 GALV. 

 ELECT. 



Page 

 2 



2, 3 



4, 1720 



3,39 



10 



1214 



2328 

 23 



25 



27 



27 



63,64 

 24 



24 

 24 

 25 

 58 



. 10 

 23 

 59 



39, 40 



26 



3639 



. 9 



. 1417 



15 



15 



16 



2.-) 



ELECT.' 



vendish 



positive and negative distinguished 

 resides wholly on the surface of bodies 



