84- 'T'he J^atural Btjlory • 
oftentimes more, and not unfrequently irradiating all manner of 
ways into the form of a Globe^ thefeveral Selenites^ likefo many 
radii-, all pointing to the center^ as is plainly reprefentcd by one 
half of fuch a globe of them, in Tab. 2. Fig. 1 . c. 
12. The texture of thcfe is fomthing agreeable, and fomthing 
fXi^txtnl^vom x\\Q Rhomboideal Sdenites^ for they all cleave in a 
planum to the flattefl: fides, and feem to confift of fmall threds 
like them ; but fome have the threds running obliquely to the 
whole fquare, as in the lower part of Fig. i .d. others have them 
meeting in the middle of the flat in an obtufeznglc^ as in the up- 
per part of the fame Figure. 
i^i The meeting of w^hich threds fo in an ob t ufi zngle^ I 
thought at firft might have very well occafioned that reprefenta- 
tion of the gramen fegetum panicula fparfa^ fair fanicled corn or 
hent-grafs^ to befeen in mofl, if not all of this kind (which like 
a fly or l^ider in amber^ feem to be included at each end of them, 
with the panicles turned contrary to each other : But I quickly 
found my felf miftaken, by flitting of feveral, whereby I dif- 
covered , that the threds fomtimes ran quite contrary to the 
(pre^dingpanicles of the cor;2 or bent-grafs (fo very well coun-^ 
terfeitedin many of them) and therefore not likely to give that 
form : And that the thing it felf was nothing but clay, thus pre- 
tily difperfedin the form of a bent ; which befide the pleafure 
of the furprizal, gave me another argument againfl Steno's opini- 
on, That Sdenkes^ s were all hardened^ when tbeir beds they now 
lie in were nothing but fluids : for it cannot well be conceived 
how the clay fliould any way get to be within them, had it not 
had a being before the felenites^ and thus included at the time of 
their formation. 
14. Of formed Jlones., though there are few that have any, yet 
fome there are of eminent ufe, and fuch is our felenites or fpecular 
Jlone ; good taken inwardly for many diftempers, numbered up 
hy Cerutu^^^ Aldrovandu^"^ znd Galen ^ ; and externally to take 
zw2iy tht blemijhes of the face. In ancient times, before the in- 
vention of glafs^ it was of very great ufe for Lanterns and Win- 
dows, it being eafily flit into very thin plates, yet loofing nothing 
thcreb)/ of its diaphaneity. Of this fays Agricola^^ are the 
y InMuPeoCaIceolario,fsa.l. Lib-^-Ca^.n.Mtif.Mstal ^ TiiS'm^.Med.faadt.lib-^. br PsNa- 
tura FoJJilim. lil> . 5. 
Church- 
