( 6oo2 ) 
and by the Partaguefes call'd Cobra dee dbeU^ found mth^ 
head of a certain kind of Serpeots oi Indej^anmd other parts 
of the Eaft-Iodics, and believed to be a Ibre Antidote againft 
the Bitrng or Stinging of venomous animals, when applied to 
the wound, to which 'f is faid it will flick very faft, till it have 
imbibed the poifoo 5 which done it will fall off : This being 
invalidated by the Author upon many Try a Is^ he affirms to 
have inade with many of fuch Stones, of divers forts and fizcs^ 
and of fuch as were eftecmed to be mofl: geouin, lent him by 
thofe very men that had brought them out India themfelvcs^ 
and were perfuaded of the great efficacy of thofe very indivi- 
dual Stones J he proceeds thence to the examination of divers 
other received vertues of things, found by him likewife to be 
fiftiticus, or at leafl:notanfwering his expcftation io iheEx- 
perimentSj himfelf made with them. 
Next, he takes notice of fcvcral thiogs^that produce real cf- 
fcfts but not always, by rcafc^o of fomc impediments interve- 
ning* E»g. I. T!h2it Aquavit ie fwims upon Oyl-olive, which it 
dothj not when 'tis undephlcgmcd, but when highly redified. 
2. That all natural waters of rivers/prings^conduitSj 8cc. have 
been formerly obfcrved by the F/i7re«^/« Academicians to grow 
turbid uppn the Infufion of water diftill'd in a Leaden-bclljex- 
cept the Conduit water of Pz/Ssyet of late this water grows 
turbid alfo: of whichthe reafon is here inquired into. 5. That 
waters diaSlled in Glafs^ if mingled with waters diftilled iO' 
Lead, grow not troubled^by the obfervations of the fame Floi 
1 $>iiim : Whereas this Author affirms,that fometimes 'tis other- 
wife i he having ftilled Parietaria in a Glafs ftill,and ftiifted the 
Rec€iven4timcs,and mingl'dall thefcihifted waters withRofe. 
ivater diftiJi'd in Lcad.and yet found them all become turbid^ 
though he often repeated it in feveral months* Yet after he dis^ 
ftilled in balneo the remainder of thefe 14 fhifcings in a Silver- 
VcflH with a Glafs-head, changing the Receiver 8 times/be 
found indeed the water^that was gathered in the eight and laft 
Receiverjuntroubledj though he mingled it with feveral ftiiff 
i^fs of water ftilled in Lead^ but all the other 7 ftiiftiogs grew 
ftiil turbid.when thus mixed. 4.That Cinnamon-water^diftill'd 
iRepld,Silvcr,Gia% wi^ and k«pt in Glafs^ re- 
mains 
