fo great efteem, he faith, thac it hath no P urging ^ Qttnt all 
in it J adding that even of AH Salts, none hach more vertus 
thananothers as he pretends to have (hew'd in an other ^^o*/; 
of his, De natura (eilium\ which alfo hath not been yectranL 
piitted into thefe parts. 
f. Hedenies, what Ariflotk ^Smcs^^ and what Galen faith 
to have often cryed, that the ^S^/^//^ of 2.Fafting perfon kills 
Vipers , and he laughs at many other particularSj that have 
been delivered concerning the of Vipers unto cer- 
tain things ; and their manner of Conception and Generation^ 
and feveral other properties, commonly afcribed to them; 
which the alledged French Author affirms to be refuted by fo 
many experiments made by this 7^/^73 Philofopher, that it 
feems to him, there is no piace left for doubtingjafcer fo au* 
ihentick a teftimony , 
Advmifement. 
THe Reader oi thefe TranfaUions is defired to corred: thefe 
Errcda m Number^. page, i p. h"ne penult, read 
fVine for Lime and page 55 3. line lO. read Threfher for Tre* 
^i^r^asfome fe/zWhaveit 1 and,page 156, line ult vc^4. fwifi 
lONVON, 
Printed for John Martyn nnd fames Alkflm^ Printeri to 
the Royal SoQicty. i 6 6 6. 
