I N D E X. 
Conjectures concerning Amber —— — 14010146 
Configurations and Cryfi allocations how different - 5 
fuppofed owing to Attraction and Repulfioni 
29, 46 
not to Vegetation — 41 
Gems formed in the fame Manner — 43 
Copper Particles how attracted by Iron 78, 82, 196 to 208 
obtained pure by fuch Attraction — — 80 
gives Colour to Gems --- — 82 
Experiments on its Colours --—— — 83 
its Colour how diffufible .. — — 84 
Branchings of it to produce — --— 195 
to preferve —> — 208 
Copperas, fee Vitriol (green) 
Corals and Corallines, Conjectures about their Formation 217, 
&c. 
by an Appofition of Particles — 219 
by InfeCts improbable — - 
Salt of examined - — 
Corrofive Sublimate, a violent Poifon ■ — 
Cryfialhzation how performed -- 
according to Si* Ifiaac Newton — 
how to preferve — — — 
Cryfials, their very minute Figures the fame as when large 
24 
and Configurations confidered together — — 41 
how formed — — 217 
Cucumber, Salt of — — —* — -— - - 170 
220 
163 
126 
21 
22 
36 
D. 
Defign of this Work —- - ■■■ ■—— 
Directions how to make Solutions of Saits — 
to examine them by the Microfcope — 
to take off Medals or Coins — - 
Dijfiolution how effected - — — 
according to Sir Ifiaac Newton, as explained by Dr. 
Friend —- - --*-- ibid. 
Drawings how neceffary to thefe Subjects — — — 7 
in thisWork no fanciful Reprefentations »— 8 
Duckweed, curious Cafes made of it by a Maggot — 415 
1, 9 
- 10 
12 
436 
*9 
E, Eels 
