E 544 ] 
king and queen be Safe, the animals, if undiflurbed, will nearly repair the whole h 
about a year, p. 189, Their loyalty and fidelity to their Sovereigns, ibid. The 
marching Icrmites deferibed, p. 189, Some of the Soldiers a£i as regulating 
officers during their march, p, 190. The labourers and Soldiers appear to have n® 
eyes, p. 191. 
Soane, a river of India, p. gr. 
Spirit of nitre. See Kirvian. 
Spirit of '/alt. See Kir-wan. 
Stanhope, Philip, Earl, his letter on adfe&ed equations* p. 193, , 
Sun. See Atwood., 
T. 
j. hettipfon,. Benjamin, Efq. lire experiments on Gun-powder, p. 229. Description of 
the apparatus employed therein, p. 230. et Seq. Description of the pendulum fo- 
determining the velocity of the- bullets, p. 234. Method of meafuring the recoil of 
the barrel, p. 23,6. Description of the- gun-carriage, p. 237. The powder made 
life of, p. 239. And the manner in which it was kept, and made into cartridges for 
ufe, i bio » Manner of charging the piece, p. 240. Table of the weights and 
dimensions of the principal parts of the apparatus, p. 242. et Seq. General' table 
ol tne experiments, p. 243. Order of them, p. 246. et Seq. Method of preventing 
the impulfe or the name upon the pendulum, p. 247. Leaden bullets cad: upon- 
plainer of Paris, p.. 251. Experiments with' powder only, p; 233. Of the method of 
computing the velocities of the bullets, p. 236. Of the fpaces occupied by' different 
charges of powder, p. 237. Of the effefit that the heat which pieces acquire in firing 
produces upon the force of powder, p. 258. The augmentation of the force of powder, 
when fired from a warm piece, accounted for, 239. Meal-powder the bed for priming,, 
p. 260.. Of the manner in which pieces acquire heat in firing, p. 261. Which heat is 
greater when fired with powder only than when with powder and ball, p. 262. 
That circumftance accounted for, ibid. Bullets are not heated by the flame of the 
powder, but by percuffion againfl hard bodies, p. 263. The running of the metal in 
brafs guns on repeated firing explained, p. 2-64. The vent of a piece lined with 
gold is much more durable than one made in iron, ibid. To what the heat acquired 
by guns in firing is principally owing, p. 265. Observations on the generation of 
that heat, p. 266. Of the effedl of ramming the powder in the chamber of the 
p’Cce, p. 268. The refalt of different experiments with rammed and unrammed' 
powder, ibid. Of the relation of the velocities of ballets to the charges of powder by 
which they are impelled, p. 270. 1 ables {hewing that when the weights and dimenfions- 
of bullets are the fame, and they are discharged from the fame piece by different quan- 
tities of powder, the velocities are very nearly in the fub-duplicate ratio of the weights 
®,f the charges, ibid, 271. Qf the effefit of placing the vent in different parts of the 
charge j 
