s88 Mifcellaneous Dtfctheries 
Form, and Colour: fome are opake, others 
tranfparent$ fome have rough Surfaces, and 
others are quite lmooth Thefe Varieties 
are very agreeable to examine by the Mic?'o~ 
fccpe 9 which fhews, in fome of the fhining 
Kinds, Grains having all Numbers of Sides 
and Angles, and fo finely polifhed, that no 
Diamond is more exquifitely beautiful. On 
others, grotefque Figures, or Reprefen tations 
of Landfcapes, Buildings, Plants, and Ani¬ 
mals, at once furprize and pleafe. 
34. In order to examine Diamonds *f' with 
the greater Exadnefs, Mr. Leeuwenhoek 
broke a fmall one between two Hammers, 
and placing the Pieces before his Microfcope , 
in the Sun-fhine, he faw many fparkling 
Flames iffue from them, with a continual 
Corrufcation in fome, like a faint Lightning. 
Then viewing them in the Shade, he obferv- 
ed, among other pretty Appearances, a little 
Flame that Teemed to dart from each Particle 
of the Diamond : and it was a glorious Sight 
to behold. Multitudes of fparkling Flames, 
mod: of a bright Fire-colour, and others 
greenifh, fiafhing faintly and like Lightning 
at a Diflance. In other Pieces of the Dia - 
# Vld. Phil. I’ranf. Numb. 289. Hook’s Microg . p. 80. 
f Vid. Phil. Travf. Numb. 374. * 
2 mond, 
