INDEX. 541 



Sounds, experiments touching equality and inequality of, 97. 

 treble and base, 100. 

 exterior aud interior, 104. 

 experiments on sounds, articulation of, 106. 

 touching the motion of, 109. 



lasting and perishing of, 111. 

 passage of, 113. 

 medium of, 115. 

 what figures conduce to, 116. 

 experiments touching the mixture of, 118. 

 disturb and alter each other, 120. 

 experiments touching the melioration of, 121. 



imitation of, 123. 

 reflexion of, 125. 

 three kinds of, 152. 

 sympathy or antipathy of, 137. 

 spiritual nature of, 140. 

 seven different kinds of, 142. 

 Southern wind, 415. 



Species visible, experiments touching, 401 . 

 Speech imitated by birds, 124. 

 Spirits, transmission of, 489. 

 emission of, 492. 



in vapour, 495. 

 which effect the senses, 503. 

 Sponges, growth of, 370. 

 Staunching of blood, 43. 

 Stercoration, 275. 

 Stutting, causes of, 191. 



Substance, attraction by similitude of, 371, 477. 

 Sugar and honey, 456. 



Sulphur and mercury, experiments touching, 175. 

 Swallows, method of making them white, 524. 

 Sweat, experiments in consort touching, 378. 

 Sweet smells, 438. 

 Sympathy and antipathy, experiments touching, 59. 



secret virtues of, 517. 

 Taste, experiment touching the, 358. 

 Teeth, 396. 



tenderness of the, 357. 

 Things, restless nature of, 4t 4. 

 Titillation, experiment touching, 403. 

 Tobacco, melioration of, 462. 

 Tones, proportion of treble and bass, 102. 

 Tongue, experiment touching the, 858. 

 Transmutation of air into water, 14. 

 by cold, 14. 

 by compression, 15. 

 Tree*, roots of, 800. 



procerity, lowness, and artificial dwarfing of, 252. 

 and herbs, experiments touching the duration of, .268. 

 Turkey, certain drinks in, 372. 

 Union, force of, 57. 

 Vegetables, 29. 



Venus, experiments touching, 360. 

 Verjuice, action of upon wool, 49. 

 Vinegar, 484. 

 Vines, experiment solitary touching, 23. 



