I N D E X. 



Reasoning, III. 461. 

 Refleaion of light, I. 185. 190. 

 Refradlion of light, J. 157. 200. 

 Repulfion, I. 30. 

 Refms, III. 53. 

 Refpiration, JIL 329. 

 Rifible objeds, III. 464. 

 Rivers, II. 495. 

 Rods, conducting, I, 351. 

 Rpots of plants, III. 6. 

 Ruby, II. 88. 

 Rumford, count, I. loz. 

 Rupert's drops, IJ. 97. 



S. 



Sal ammoniac, II. 41. 

 Salt, common, II. 34.. 

 Salts, II. 2. 

 muriatic, II. 33. 



neutral, I{. 20. 

 nitrous, II. 26. 



- vitriolic, II. 22.- 

 Sapphire, II. 88. 

 Saturation, I. 21. 

 Screw, I. 80. 



Sea, II. 473. 

 Secretion, III. 306. 

 Sehie, common, III.. 483. 

 Senfes, III. 363. 

 Sight, I, 241.- III. 384. 

 Siliceous earths, II. 85. 

 Silver, II. 215. 

 Siphon, II. 416. 

 Skin, III. 291. 

 Slate, II. 84. 

 Slicker.fides, II. 183. 

 Smelling, III. 373. 

 Snow, II. 486. 

 Soap, II. 6. 

 Soap rock, II. 65. 

 Solidity, I. 10. , 



Solution, I. 20. 

 Sound, I. 440. 



Spar, Derbyftiire, LI. 5?. 

 Spar, ponderous, II. 49. 

 Sparry acid, II. 62. 



tartar, II. 44. 



Speaking trumpet, I. 449. 

 Spectacles, I. 248. 

 Springs of water, II. 491. 



hot, II. 504. 



intermitting, II. 494. 



Starch, III. 56. 



Stars, falling, I. 493. 



Steam of boiling water, I. 126. 



engine, I. 126. II. 585. 



Steel, II. 164. 

 Stomach, 113. 209. 

 Su&ion, I. 430. 

 Sugar, III. 43. 

 Sulphur, II. 256. 

 Sun, I. 181. 

 Swine ftone, II. 62. 

 Sylvanite, II. 156. 

 Sympathy, III. 475. 

 Syphon, II. 456. 

 T. 



Tallow, mineral, II. 281. 

 Tafte, III. 371. 466. 

 Teeth, III. 107. 

 Telefcopes, I. 160, |66, 167. 

 Temperature, I. 88. 

 Tendons, III. 92. 

 Terras, II. 108. 

 Thermometers, I. 88. 1 10. 

 Tin, II. 175. 

 Titanite, II. 158. 

 Topaz, II. 88. 

 Torricelli, I. 418. 

 Touch, III. 369. 

 Touchitone (die) II. 231. 

 Tourmalin, II. 87. 

 Tungflein, II. 61. 126. 



V. 

 Vacuum, I. 417. 



Vapour, 



