SiaffordJBire Ballmine^ and Dr Lijler^ Mimra ferri pUfor^ 
mis -y they have it upon the Weftern Coafts near White- 
havtn., and call it there by the natne of Cat-fcamps. I have • 
fcen of it too upon the TorkJhir$ Coafts in Robift Hood's 
Bay • You may if you pleafe, till I find a better name, CalL 
it I^apk }^mer£ ferriy PiUform! f/^iljff in cujus Meditnl* 
tiv^ unwn vel plnra filicis folia rcprefefttar^tur. (\ have fince^ 
from my faid vt'orthy Friend received Specimens of both 
fprts.) And to give you an inftarice that am nvd the fame 
piece of Rock does not always Jho&t into Stofie at one and the 
fme time^ btit firjl one part ofh and then anOtffisr^ and they 
too not after the fam.e regular manner, but irregularly 
enough; I have fent you a piece of Rock, Cryflal^ where 
you may eafily obferve the modus concrefcendi 'm the mid- 
dle, to have difered from that of the outfide, nay, fome- 
times I have feen in the middle of fome trahfparent Stones 
a fmall drop that never would take the (olid form of the 
reft of the Stone at' all. The gd Curiofity was alfo fent 
IBO from the fame very kind Friend Dr Cay^ 'tis a piece of 
m Iron-holt (2 inches long) found in a Stone Qumy^ now 
Teturn*d into Iron Ore again 5 this being a Property that 
Ifonhas^ and no other Metal, as Dr Lifter obferves in his 
Journey to Paris. 
4thly, The Copper Ore fo regulated (hot into an O&oe^ 
drous iorm^ was fent me from Sweden by Mr William Sjkcs 
€& Stockholm Merchant, it has 8 folid Triangles, and con- 
fequenrly 6 angular points, and is as well of fhe bignefs 
as figure of fhe enclofed draught of it ^ my faid Codin 
receiv-d it from the Copper Groves at Fallum^ where ve- 
ry many of the fame form were then found, tho he can- 
iiiOt now get another of them* See Tab. 7 . Eig. 2. 
¥. Ex* 
