Of 0 XFO "R^p^S H1%E. pi 
more than a courfe rubble-ftone, yet is chirily cafed oveV with a 
fine laminated fubftance (the plates lying obhquely) much like 
LafMjudaicws : In form they are flat, dcpre lied upon r^e hafis z,^ 
in colour generally yellow, their r^/j made of a double rank of 
tranfverft lines, with void fpaces between the ranks, vifiblc enough 
on the top of the ftone Fig.^, but not fo diftinguidiable on 
the bottom Fig. i o. the whole body of the ftoiie, as well as the 
fpaces included within the rajis^ being elfe\\ here filled with An^ 
nulets^ much more curioufly wrought by Nature^ than by the tool 
of iheGraver, 
32. The c^;z/^rof thefe r^jj/^, hy PI in) cdXhd Modiolus ^ hy A-^ 
riftotle^ Vmhilicm% is never placed on the top of the ftone, but 
always inclining to one fide, as that at the bottom do's to the o- 
ther ; the Axps lying obliquely to the Horizon of the ftone. Which 
gave occafion to a Learned Society o^Virtuofi, that during the 
late llfurpation lived obfcurely at Tangley^ and had then time to 
think of fo mean a fubjeft, by confent to term it the Polar-ftone^ 
having ingenioufly found out, by clapping two of them together, 
as fuppofe the Fig. 9, and i o. that they made up a Globe^ with 
Meridians defcending to the Horizon^ and the Pole elevated, very 
nearly corrcfponding to the re<^l elevation of the Pole of the place 
where the fiones are found. 
33. The two next, reprefented Fi^. it, 12. like the former, 
being flat and deprcffed on their bafes, ha - ing alfo fome refem- 
blance of a ffar of 5 points, were therefore thought fit to be 
placed next. Whereof the 1 1 indeed is a beautiful ftone, found 
fomwhere in the Cbiltern zhout Afion Fowant, wHiofe inner fub- 
ftance, though of black Flinty to outward view is of a cinereous 
colour, and adorned by Nature with fomwhat more than ordi- 
nary. For befide the Modiolu^^ and the ifiuing raj/s made of dou- 
ble ranks of points^ with tranfverfe lines interceding them, it is 
alfo fet with other points furrounded with double Annulets ■ on 
each fidethe ftonewith afingle, and from the terminations of the 
rays with double ranks. The points thus furrounded, are.neithcr 
deeply excavated, nor any thing prominent above the fuperficies of 
the ftone ; but the rays as they are but ftiort (not extending above 
half way to the rim of the ftone^ fo they are deeply hollowed 
down within it, wherein it differs, 
f Llh. de Mmdo ad Alexandrum. 
M 2 
34. Frofti 
