i|he tiiidle part of the Stoncj where fiq 
favitics are found, is the fame with the 
lUbftanee of the cavities, which are all 
about the fuperfices,) they are certain¬ 
ly eaten out by Worms;as both appears 
hy the fuperficeof the cavity, and is evin¬ 
ced by a certain body found in many ca- 
Yiti|s,woven together outof pretty thick 
^laments, which Body in fize and fhape 
ahfwers to the cavity it felf. Certainly 
they-are not made by the Snails, nor a- 
bout the Snails, feeing that fuch teftace- 
ous filhes ha\je no organs fit to gnavv,nor 
doth any cavity aniWer to the figure of 
the fliells. hlor is it a wonder , that 
Stones expofed to the Sea fhould in the, 
faid cavities harbour Shell-filhes Eggs 
thrown out by the Sea, fiuce I h^e hi¬ 
therto feen none of them that was deftf- 
tute of a manifeft out-let. If any one 
^all lay, that thofe cavities were pro¬ 
duced by a lapidefcent juvce concreted, 
about certain bodies, I anfwer, that then 
there would have been found feme cavi¬ 
ties every where overlaid with the fame 
matter without an out-let. 
4. More-over, a Shell in part wafted 
inwardly, where a marbly cruft, cover'd, 
with’ 
