der ; and a medicated liquor, injeded into the thorax of 
a Perfon of Qiiality, gave him the taft and fmell of the 
drugs, wherewith the liquor had been impregnated. 
From the bringing off the matter of an spites by 
feige, or urine : 
From the ftaining Ivory Purple with a folution of Gold 
in Jqua l^egia ; blackifh wich filver, and blewifli with 
copper, diffolved in jR?r^/j*. For proving the Porofity 
o£ Bones, he urges their fpecific Levity s that Blood veflfels 
^ pafsthemj that they imbibe exhalations from the Air, 
and emit them sygain (as appears from the weighing 
bones at leveral^afons of the year 5) and that Mercury 
has been found in the bones of fomeperfons, who have 
taken of it. 
The other Effay h conCQtning the porou/nefs oi /©//^bo- 
dies, which the Author proved, firft a priori, from the O- 
rigine, and Formation of divers hard bodies ; from the 
great difparity that may be found in the fpecific gravi- 
ties of fuch bodies, as the Eye does not perceive to be Po- 
rous j from the frame, and conftitution of folid bodies ; 
for even they confift of particles which cannot be lup- 
pofed to touch one another fo exadly, as not to leave any 
Pore between them. Secondly a pofieriorz, from fome 
experiments, and obfefvations, arguing the Poroufnefs of 
wood. Earthen veflfels^ ftones, metals, and even glafs it 
felf, concerning which laft the Author faies, 
Firft, 'tis very probable that Glafs may be pierc'd into, 
to fome diftance, even by vifible and tangible bodies. 
Secondly, common Glafs is not ordinarily permeable 
by Chymical liquors, tho ftrong and fubtil, nor by the 
diredtly vifible, or odorable expirations of Bodies, tho 
abfolutely {peaking it be pervious to fome corporeal fub- 
ftances, 
P Joh. 
