S g a N H P 'ft'T o R Y
I t their ends: at th«if V R & M j t t tjiey make unequal angles, -and
therefore^ould fiat. be o f the ftala&ite kindy. Its; colour is like
manufa&bred Copjpef before i t is polilhed. ‘ . . . • . '
.Kg: n .^ h lu ^ p e f fe e q o f a fl^ y pafs-coloured {pecimen; its
furikce bMet with Circular growing lefs towards die top,
{hewing that .drops pf tills metal falling from'above* were at firft
large, and fpr^d iilto the broadeft lamina; a {mailer drop fix*
ceeded, and falling Oft the fame centre, hardened into a Idler circle,
and fo on, the circles being as many as there were drops. Some
have five lamince on one another, c > r^ e rS^ ^ ^ ^ re e , and
lour, large ih proportion, and in number equal,to the drops which1
fell. This rare' {peciinen {hews how the flaky ore is formed, namely;
by diftillation. N . B . The under part is bliftered into large tubercles,
as in,the following {ample. V ^ ^
iii. The bottom of flake-ore bliftered by diftjlling into a foft bed,
(likely of lulphur) each drop making a convexity.
tv. feafe-coloured flake-copper, fmall-bhftered, deprefffed on the
furface mto five concave cells, divided by plain partitions. _ ;
v. Brafs-coloured, powdered with bltfe earth, the top divided
into two cylinders, below which, from a wrfcathed edge, the filaments
are perpendicular, in the fimgite manner. \ :, | I®
1 yx. Brafs-coloured j the filaments cOUtfing tranfverfely at tight
angles with one smother; it is powdered with a blue little infetiour
to 'the Hittra-inaririe. _ ^
P v i i . A conic dufter o f wreathed threads, hrafs-ctiloured, curi-
oully interlaced, in Ibme parts detached from the main body like
hollow carved-Work, incrufted with a beautiful cinereous film, the
Surface rather o f a fine g rit than finooth and gldfly* | |
. “v^ii. A n hexagonal tube dP flafe-copper, tits preribratidn "filled
with the feme {caution, girt round with a continued hantfage tif
Bliftered flake-ore. ' "
. Vix. Bru£h copper-ore, in parallel tubes, f©f a dufky brewn colour.
x. A {olid piece o f the fineft green; its texture confifting d f
different Jlrata o f greens, large ‘bliftered, probably the ‘malachites
o f authors.
xi. Tels folid green, o f a glofly coating, formed into tubes,
Braced with vermicular rings like the joints o f a ^Caterpillar j the
"outer tubes have an inner one inclofed, ‘the perforation fmall as the
point o f a needle.
xii. Solid, glofly, green, branchy.
x ii i . Green; the filaments as fine and glofly as the pile o f velvet,
armed With a thin {hell df bliftered flake-ore, on which are formed
"three parallel circular determinations o f fh e dcfcending ftrits.
Fig-
P Cb/l/WV as /mO/u armfr WMiatoul K/r&t/iec6 s)n4sm/imwk/ ■ #JSol