480 INDEX. 
body in motion is either as the matter into the velocity 
or into the square of the velocity, according to the effect 
intended to be produced, 134—object to Mr. SmeaTon’s 
opinions, 164. 
Emerson, Mr. undervalues the principle of the vis viva, 
~ 127—has fallen into an error in his fluxions by neglect- 
ing that principle, 128. 
Eudiometer, description of one, and of other apparatus, 
384, 
Ewart, Mr. Peter, on the measure of moving force, 105. 
F 
Figurative Language, on the origin and use of, 74—the 
result of necessity, 77. 
Flowering of Plants, in different latitudes, times of, 466. 
Force, in mechanics, has two significations, the one denoting 
pressure simply, the other pressure multiplied by space ; 
this last denominated moving force; they differ as a line 
differs from a surface, &c. 224. 
Foreign Commerce, its importance, 45—in some cases in- 
creases in others diminishes population, 53, 54—when 
favourable to happiness, 55—its influence on the power 
of a nation, 57 et seq. 
G 
GauiLEo M. the first author of the doctrine of the vis viva, 
and of the Law of continuity, ascribed to Leisnitz, &c. 
217, et seq. 
Galvanic electricity, theories on the excitement of, 293— 
quantities of electricity in the successive plates constitute 
a geometrical progression, 297-——approaching an arith- 
metical, 208—chemical agency necessary to the action 
of the pile, 300. ; 
Giggleswick, in Yorkshire, observations on the ebbing and 
flowing well of, 354, ¢¢ seq. 
Gover Mr. John, on the ois viva, 270—on an ebbing 
