Part III. 
314 Of Regular Stones. 
mends againft the Sore on Childrens Heads, ufually called 
Tinea Pueroritm- 5 and Ulcers in the Legs. It hath no fenfe 
of Acids. 
The FIBROUS BLOOD-STONE. Haematites. This 
I take to be that particularly, by Pliny call'd Androdamas. 
It hath affinity with the Amianthus , not only in being divi- 
iible into Fibers 5 but in that thefe Fibers are alfo fomewhat 
flexile, and of a greenifla colour. Yet here, they Hand not 
juft parallel, but rather fo as to tend towards one point 5 
like the Styria in fome forts of Antimony. This Stone is 
alfo altogether mfenfible of Acids. Found in Germany , 
Bohemiansilefia 3 among the Iron Mines 3 of an Iron colour, 
a dull red, yellow, and fometimes black. Much celebra¬ 
ted againft an Hamoptoe. TraUianus preferibes it ground 
to an impalpable powder, from 9j to for a Dofe. 
A Piece of SPAUD or TARRAS. Schiftus Capillar is 3 
as I call it. It confifteth of white, gloffy, and parallel Fi¬ 
bers. But different from the Amianthus , in that they are 
very brittle 3 nor fo eafily divided. From the Schiftus de- 
fa) 'in fine, fcribed by Wormius, (a) which is divifible into Plates. And 
Amiamho, ^ lat Boetius defcribes, which is yellow. This is pure 
&c. ’ white, alrnoft like polifh’d Silver, and in a thiner piece, 
femiperfpicuous. Being rub’d between ones Fingers, it di¬ 
vides into an infinite number of Hairs,twenty times fmaller 
than the fmalleft Needle. It ftirs not with Acids: and 
therefore feems neither to be any kind of Gypfum properly 
. fo call'd. 
Another Piece of the fame, from Warwickshire. Given 
by Sir Johti Hoskins. 
A Piece of HARD TARRAS, from Stinchcombe in 
Gloucefterjhire. Given by the fame Hand. 'Tis more clofc 
and firm than the former, rather like thofe in Sal Armoniac 3 
the Fibers not altogether fo regularly pild; nor fo white, 
more refembling the Mother of Green Vitriol. 
The fame Analogy as is between Talk. Mufcovy-Glafs,md 
Amianthus: is alfo between the Rhomboid Spar, the Saxum 
Fijffile, and the Tanas. 
CHAR 
