mh^tconcstm Souffdsi^ and raakiDg a Gon)e£l:ure about the 
propagation of li^Aij he would have difcuffed, whether it 
might not be fuppGlcd,that Lrghf hath for its vehicle fome fiich 
iBotioo in ao Air more fubi ile • and fliew'dj that indeed in this 
Hyp oi kjis dl iht proprieties of L/gA^ and C&lmrs might be 
plicated io a very oatural sny^ without which it would not be 
done but with great difBculty/ 
This is the whole DefigD^drawn up by the Author 5 in which 
he intended, as he faith in this pieci?, to have interfperfed di« 
xftxs curious and ufcful pra^tife of Art, and many demonftra- 
tions giving light for thedecifioo of feveral confiderable Qne- 
ftions Id Natural PhiJofophy. 
11. Antoniih Grand HIstORIA NAtVRJS. londini, apud]. 
Martyn^ Societ.rypographum, ad InjigmCampm^ in Cs- 
miew Paulij 1673. 8°. 
THE Learned Author of this Bookj defirous tofiiew^that 
e ven the common and obvious />^^«(7;5^^e»4 of Nature 
can be very coogruoufly explained and accounted for by thofe 
Principles he hath formerly laid down^and publifhed A. 1672. 
under the Tnhof Infiimio-ThilofophU^dtknbtd in Numb, 80. 
of thefe Traas 5 maketh it his bufioefs in this Treatife,;to pafs^ 
fpr that purpofe, through the whole Body of Phyfiologyjand 
in To dcing to fupply in due places what he hath omitted in the 
faid loftitution. 
This he perf©rmeth in Nine feveral parcs^ into which he 
thought' fit to divide his Book 5 • ' ^ 
Inth^i? ofvF^hichhe rreatsoftheN;^/«re^^o in ge- 
n ral : Where he endeavors,!^? difprove all Vacuity in Bodies*; 
fi? refute the Arguments and Experiments alledged to affert a 
vacuum > and explain the Proprieties and Affccaions oFBo- 
dies, as Ind^^ and Denfiry, HardQcfs . 
and Fluidity^ Roughoefs and Smoothnefs, Perfpicuity and O- 
pacity^ alledging various Experiments concerning all thele, 
and affigoing Reafoc^ for them* 
In the Second^ he undertaketh to explaiB the true Nature 
of ^M^alitiesjd Bodies by Experiments , and to make it 
out 
