[ J °7 8 3 
G. 
Galileo , Jiis opinion concerning the communicating of motion to bodies, p. 346. 
Glafs , the fitted: fubftance to ufe as the flandard of comparifon in experiments upon 
the comparative disabilities of bodies, p. 474, 475. Glafs a ufeful fubftance for 
the pendulums of clocks, p. 446 — 452. 475, 476. Obfervations and experiments 
tending to confirm Dr. Ingenhoufz’s theory of the eleCtrophorus ; and to fhew the 
impermeability of glafs to elecftric fluid, p. 1049 — io 5S* 
Gluttony and drunken nefs deftruCtive to health, p. [34. 
Goldjifh , the tails of two frozen with a view to fee if they would be reftored to the 
aCtions of life when thawed, p. 37, 38. 
Good Hope , cape of, journal of a voyage to if, p. 391-- 404. From thence to Madrafs 
Road, p. 405—416. 
Goofeberries, the efFedt of their effluvia upon air, p. 207. 
Gravity , Reflections on the communication of motion by impadt and gravity, p. 344, 
See Motion . 
Greens, their great ufe in curing the fcurvy, p. 663, &c. More antifeorbutic in their 
raw ftate than when boiled, p. 664, &c. See Scurvy . 
Grenville . Journal of a voyage to the Eaft Indies in the fhip Grenville , in the year 
1775, P 3^9 — 4*6. ^ ee Tables. 
Greenwich . Diherence of the meridians of Paris and Greenwich, p. 102c, 1021. 
Of Greenwich and Leicefler, p. 1021. 
Gunnery . Concerning Mr. Robins’s new principles in gunnery, p. 50—52. Kutton 
on Gunnery, p. 50. See Gunpowder, 
Gunpowder . The force of fired gunpowder, and the initial velocities of cannon balls, 
determined by experiments ; from which is alfo deduced the relation of the initial 
velocity to the weight of the fhot and the quantity of powder, p. 50. The nature 
of the experiment, and of the machinery ufed in it, p. 53 — 56. A particular de- 
fcripdon of the machine, p. 56, 57. Method of finding the centre of ofcillation, 
p. 57, 58. Methods of afcertaining the centre of gravity, p. 58, 59. Rule for 
computing the velocity of the ball, p. 59 — 63. Experiments made, with remarks 
on the different velocities therein, p. 65 — 82. A view of the principal inferences 
that refulted from the experiments, p. 83 — 85. 
Gunpowder , experiments in firing it without the leafl appearance of a fpark, p. 302— 
304. Method of firing it with the Leyden phial, p. 305— 307. Remark on the 
two methods, p. 307. 
Gunpowder magazines , pointed conductors to fecure them from lightning more ufeful 
than balls, p. 155 — 159. Rounded conductors fecure them againft the effects of 
lightning better than pointed ones, p. 245, &c. Pointed conductors recommended 
as the molt effectual for this purpofe 9 p. 314-—317, Farther enquiries refpeCting 
4 lharp 
