C 574 1 
Come , fays he, from its dropping forth from thence, 
or trom the Rocks, which may be effedted by the fub- 
terraneal heat forcing it thither 5 its being in To large 
pieces and crack'd on the furface, feemjf, he thinS, 
to jfavour this opinion. After this he gives an account 
of the vertues of it , which he pretends are very 
ftrengthening, efpecially of the Head and Nerved;' At 
the end he gives an explanation of five curious Figures 
of it taken in feveral pofitions by the Diitch Ea^ In- 
dia Company* ' ^ ' 
Printed for Sam. Smith and Ben). Watford, Printers to 
the Royal Society, at the Princes Jrm in St Paul's, 
Church-yard. 1700. 
