rw7 
An Account of fonie Books, 
I. Experiments, Notes, &c. about the MECHANICAL Origm of 
divers particular ^ALITIES: Among rvhieh is inferteda dif- 
courfe of the lmperje6tio?7 of the Chymi(ls DoSirine of Qualities ; 
together vcith fome KepUtons upon the Hypothecs of AhGALlani 
jtClDUMi Bjthe Honor abk Robert Boyle ; Fellovp of the 
Royal Society* London, iGT^.ind^^ 
THefe Traflsarea frefh proof both of the Noble Authors con- 
ftancy in his kindnefsto Experimental Philofophy, and of 
his fagacity in giving a more intelligibleaccount of Pbilofophical 
fiibjefts , than is commonly received in Schools. The Matters here 
prefented, by way of Specimen^ do comprehend in a fmail Num- 
ber a great Variety ; there being fcarfe any one fort ^udities^ . 
of which there is nor an Inftance given in this fmall Volume ; Since 
therein Experiments and Confiderations are delivered abouc 
HEAT and COLD , which are the chief of the four Ftrft ^^uali' 
tks 5 about TASTS and ODORS , which are of thofe , that being^^ 
immediate Objefts of Senfe, are ufually called Senfihie ^mliiies; 
abouc VOLATILITY aud FIXITY, CORROSIVENESS and 
CORROSIBILITY, which, as they are found in Bodies purely 
natural , are refcrrable to thofe Qualities, that many Phyfical 
Wricers call Second Qualities ^ and which yet, as they may be 
produced and deftroyed by the Chymifts Arc , may be ft y led 
Chymical ^alities , and the SpagyricaJ ways of introducing or ex- 
pelling them may be referred to Chymical Operations ^ of which 
here is given a more ample Specimen in the Mechanical account of 
GHYMICAL PRECIPITATIONS. To all which are added 
Tome Notes about MAGNETISM and ELECTRICITY , which 
are known to belong to the Tribe called Occult ^dities^ by dark . 
Philofophers. 
- '■ Concerning thefe particular Qiialities,the prefent defignof the 
Excellent Author is chiefly, to give an intelligent and Hiftorical 
Account of the Poffible M^'f^^;^/^^/ Origination ^ not of the Vari- 
0Ui phenomena of th^m $ though his Secondarytud is to become a* 
Benefaftor to the Hiftory of Qualities , bv providing Materials for 
himfelf or others : And this hath made himnot fcruple to add to 
thefe , that tend morediredly to difcover the Nature or Effence 
of the Quality treated of ^ by deriving it from Mechanical px'mQ\r 
