{ 176 ) 
is obferv’d near fwift running Waters, and is commonly 
very porous, not unlike the Tophus, and the ftony 
Concretions in fubterranean Cavities, call’d Stalaftit 
belong to this laft Sort. Thus far what is contained in 
the firfi: Part, 
The fecond gives an Account of fuch Cry ft alii im- 
froftrie ftc diffi, or Cryftalline Bodies, which are not 
properly Cryftals, as have been mentioned by feveral 
Natural Hiftorians both ancient and modern. The Au- 
thor diftributed them into the following Gaffes, each 
of which comprehends Stones, Metals and Salts. 
Corpora Cryftallifata, qua; improprie Cryftalli vocantur. 
Claff. I. Globofa, rotundata 6c fphaeroidea. 
II. Conica, Conoidea 6c fufiformia. 
III. Cylindrica, folida aut tubulata. 
IV. Pyramidalia & cuneiformia. 
V. Prifmatica, Parallelepipeda, Rhomboidea, 
Trapezoidea. 
VI. Polyedrica, 6c Polygona, regularia 6c mi- 
nus regularia. 
. — VII. Racemofa, Arbufculorum in modum, 6c 
filainentofa, filorum, aut capillorum inftar 
nafcentia 6c ftriatim contexta. 
— — VIII. Cruftis, fquamis, lamellifque contexta, 
fine, vel cum figura propria. 
„ IX. Corpora, quorum cum Cryftalloaffinitas in 
pelluciditate potiffimum confiftit, figura eorum 
native, vel incerta vel nondum perfpe&a. 
FINIS. 
