are much alike, other wife I cannot conceive how 
the Effluvia of one can penetrate and pafs with fucJi cafe 
the Body of the other, and there to aft as if it v/as one 
and the fame with it. 
V. Account of fome Experiments^ in relation to 
the Weight of Common Water under differ ait Ciremir 
fiances, Mr. Fr. Hauksbee, F. S, 
F lrft, I took a Glafs of Common Water, and ha- 
ving weigh’d nicely a Glafs-Bottle in it, wliofc 
Bulk was equal to the Bulk of 575 Grains of the fame 
Fluid ; then I caus’d fome of the fame Water to be boy Pd 
over the Fire, and after that, it was included in Facm., 
and there remained till it became of the fame Tempera- 
ture fas to coolnefsj with common Water. Thus to the 
ntmoh of my power, I endeavour’d to extricate all the 
Air out of the Water, thinking in that State it would 
become more denfe than when I weigh’d my Bottle flrit 
in t ; but contrary to my Expeftation, I found that the 
Bottle had juft the fame weight in it, as before, which 
feems to confirm the impombility to comprefs Water 
by force into a lelfer fpace than it naturally polfelTes ; for 
if upon the removal of fuch a quantity of Air from out 
of its Body, the Farts do not Aide any clofer toge- 
ther, how fhoulda Weight laid upon its Surface, when 
its Interftices feem] to be replete with Air, make any 
impreflion on it. The Body which was forc’d out of the 
Water by the prementioned means, I call Air,fince,for any 
thing to the contrary that I can difeover, it is fubjeft to 
all the fame Laws .with it ; but that the Water upon its 
IT Abfence 
