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matically Spharical ihtiv furfaces being perfedly 
litey and without any the leaft inequalities, 'Tis evi- 
dent, Corpujcles of mch a Figure are eafily fufeeptibk 
of Motion^ yea far above others whatever \ and con- 
fcquently the moft capable ©f moving ^nd. conveying othet 
Matter that is not {o a6live 'mA voluble. Then- the In- 
tervalh of Bodies of that Figure are, with refpedtto their 
Bulk^ of all others the largefl: and fo the moft fitted 
to receive and entertain foreign Matter in them. Be- 
lides, as far as the Try ah hitherto made inform us, the 
Conjiituent Corpufcles of Water are each fingly confi» 
der'd abfolutely folid: and do not yield to the greateft 
external Force, This fecures their Figure 2^g2mA any Al- 
teration : and the Infervalh of the Corpufcles mufi be al- 
ways alike* By the latter 'twill be ever difpofed to re- 
ceive Matter into it : and by the former^ when once re- 
ceivedy to bear it on along with it. Water is further ca- 
pacitated to be 2. Vehicle to this Matter^ by the tenuity 
and finenefs of the Corpufcles of which it confijls. We 
hardly know any Fluid in all Nature^ except Fire^ whofe 
conflituent Farts are fo exceeding ^ubtil and fmall as 
thofe of Water are. Theyil pafs ^^>m and J«/^'ry?/m 
that neither Air nor any other Fluid will. This enables 
them to enter the jinefi Tubes and Veffels oi Plant s^ and 
to introduce the terrejirial Matter^ conveying it to all 
Parts of them I whilft each, by means of Organs 'tis 
endowed with for the purpofe, iittercepts 2iT\A affumes in- 
to it felf fuch Particles as are fuitable to its own Nature^ 
letting thQ rejipafs on through the common DuBsl. Nay 
we have almoft every wh^rt Mechanical Infiances of 
much the fame Tenor, 'Tis obvious to every one how 
eafily and fuddenly Humidity^ or the Gorpufcles of Wal- 
ter fuftained in the Air, pervade and infmuate themfelves 
into Cords^ however tightly twifted : into Z/d'^^/i'^'r, Parch-- 
ment^ Vegetable Bodies^ Wood^ and the like. This it is 
that. 
