Part III. Of Regular Stones. 
bigger than the former , and the fides above ; an inch 
thick. Rough on the outfide, and fmooth within. Yet 
fo, as to be farrow’d with certain fhallow Rings. To which 
alfo the Calimus, therein contain’d, exactly anfwers, as any 
Metal doth to the Mould in which it is caff. Both of them 
make an Efervefcence with Acids. 
The CALIMUS of another Eagle-Stone , as big as a 
good big Gall, and knobed in the fame manner. 
Several Species of this Stone are figur’d by Aldrovandwsfa) M Muf.Mc 
The flinty Eagle-Stone, and many other Flints , if ob- tai1 ’ 
ferv’d when they are broken, feem to be an Allay towards 
the Onyx. 
The Eagle-Stone is found in Apulia, Germany, MifniapSc. 
Much accounted of by fome,as an Amulet againft Abortions. 
The SEMIGLOBULAR TOAD-STONE. Lapis Bufo- 
news f. Garatronens. It looks like the the one half of a hard 
flinty Eagle-Stone $ and probably, is nothing elfe. The 
Diametre* of an inch. 
The SEMIOVAL TOAD-STONE. ’Tis an inch long, 
' an inch over, of a brown colour, and flinty. 
The Long SEMIOVAL TOAD-STONE. This alfo is 
flinty, and of a fhining brown, or the colour of Oriental 
Bezoar, being polifh’d. ’Tis about an inch long, and near 
i an inch over. Befer figures this, with the Name of Batra- 
choides. 
Another fort of Toad-Stone, femiglobular, and folid, fc. 
with a flat bafe, is defcribed by Gefner. (b) Thus far of fTtib. de 
Stones more Round. I fhall next defcribe thofe which are 3p ' Flg ‘ 
Cylindrick^, or near that Figure. And firfl the Ofteocolla , of 
which here are feveral Species. 
The SOLID or Pithlefs KNIT-BONE. Ranked by 
Kentman , (c) and not improperly, among!! the forts of OJte- m Foiiii, 
ocolla. Yet obtains the peculiar Name of ENOSTEOS: Nomcncl - 
being porous, light, fpongy, and cylindrick ; fo as to look 
juft like the inward part of a Bone, or of Harts-EIom. 
The KNIT-BONE with a fmall PITH. ’Tis bended 
almoft like the Letter /. Cylindrick, and three inches round. 
Almoft folid, yet containeth a very fmall Pit!). The outer 
part, of an Aflvcolour, and gritty or fabulous. The Pith, 
like moft white Chalk. Both of them make a confpicuous 
Efervefcence with Acids 5 but efpecially the Pith. 
Q ji 2 
The 
