284 Of (3 em. Part tit 
A THIRD, growing upon a Bed of the fame colour $ 
(a)OfGems, but opacous. Mr. Boyle (a) mentions a piece of Cryftal, in 
a?Muf. one part of 2i\\Emr aid-green. And Terzagi (b) another that 
Sept. was black. 
A Crftyal COLUMN, naturally inclofing a kind of Mofs 
( or the likenefs of it ) at one end of the Column of a paler, 
at the other of a dark Green. J Tis above * a foot in compafs. 
ANOTHER piece of CRYSTAL in which is immerfed 
a Mony fubftance of a redilh colour. And there are fome 
Cryftals have been known naturally to enclofe a Li- 
re) Mr.%/e, quor. (c) 
0/ -Gems, A Piece of polifh'd CRYSTAL in the figure of a half 
Muf. 3 'caic Globe. Tisonone fide flaky, and hath many very fmall 
Bubles, by which it appears cloudy. 
ANOTHER Piece polifh'd into a Spherical Triangle,and 
fomewhat Oval. 
A THIRD Piece polifh d into a Cone. 
A Many Piece of CRYSTAL. Not pointed, nor an- 
gular 3 but of a roundifh figure 3 much bigger than any 
mans head. One way, near a yard in compafs 5 the other, 
above three quarters. In weight, thirty nine pounds and a 
* Haver dupoije. Yet is it very clear, beyond the cleared 
Ice of the fame thicknefs. The biggeft piece of Cryftal I 
find mention d elfe-where, is a Ball of fix and thirty ounces 
111 Septalims Mufaum. 
Cryftal, at leaft fome forts of it, is the fofteft, faith Boe- 
00 Lib. 2. tiu6 9 00 of all Gems. He fhould have faid, of all perfpi- 
c. 73.1. 1. cuous Gems: for the Turcois is much fofter. The moil 
re)Muf . Sep . ufual Figure of Cryftal, is Sexangular: yet Terzagi (e) 
tai.c.p.n.54. mentions a Rock of fquare pointed ones. But it is obfer- 
vable, That he faith the Bed on which they grew, feem'd to 
be Gold-Ore. If fo, it might proceed from fome govern- 
ing principle in the Ore. For I have heard it noted, as I re- 
remember, by Sir Chriftopher Wren, That Grain-Gold is of- 
ten found naturally figur'd into Cubes. Cryftal grows in 
moil Countries, both cold and hot : the Globoid, efpecially 
in Bohemia and Silecia. 
A Drachm (/) of the Powder of Cryftal, with Oil of 
g^&l/ ^ weet Almon ^ s j a prefent Remedy for thofe that have 
Lib. 2. c. 74. taken fublimate. As alfo for bilious and chylous Diarrheas. 
% Toza i 00 When Calcind, by fome called Fulvis Cafaris, of ex- 
in Muf. Sepc. ccllciit life aganift the Epilepfte. (h) An 
