: 
1 S:T-O-R ¥ 
Century. f. 
—y 
:Jilg a Pit upon the Sea-fhore, fomewhat above the 
Sor, High-water Mark, and fink it as deep as the Low- 
! water Mark ; And asthe Tide cometh in, itwill fll 
with Water, Frefh and Potable: Thisis common- 
ly pra@ifed upon the Coaft of Barbary, where other 
Frefh Water is wanting. And Cefar knew this well, 
when he was befieged in Alexandria ; forby digging 
' O" FU te) 
acs apt raaia  ig UN E 5 Gelin a a I al ac, 
—- : ; . . : — - ‘ 
ane . , * Py VT) At . 
va 
ous Works of the Enemies, which had tarned the 
| Sea-fands had Natural Springsof Frefh-water. But it is plain, that it is the 
And the Sea-water pafling or ftraining through the Sands, Jeavyeth the 
ie Ds 
Experiments 
in Confort, 
touching the , 
Straining and} 
Pafing of Bo- |. 
dies one tharow 
another; which 
they call Per 
colation. 
Sea-water upon the Wells of Alexandria; and fo faved his Army, being : 
1Saltnefs. 
; 2 
paffed through Earth ; through ten Veffels, one within another, and yet it 
| (by the relation of another) Salt-water drained through twenty Veffels, 
| made by theSca-fide ; and yet but in part, if icbetrue, that twenty Repeti- 
} Nature are, incommoncourle of Experiments, except they be led by great 
| difference betweena Paflage of Water through twenry fmall Veflels, and | 
| Secondly, there isa great difference between Earthand Sand ; for all Earth 
| befides, Earth dothnot ftrainthe Water fo finely as Sanddoth. But there 
i thatis, that m the Experiment of Tran(mifion of the Sea-water into the Pits, 
. = ’ oe "4 : - — ee E , 
of Pits in the Sea-fhore, he did fruftrate the labori- 
then in Defperation. But Cefar miftook the caufe; for he thought that all 
Sea-water, becaufe the Pit filleth according to the Meafure of the Tide 
I remember to have read, that Tryal hath been made of Salt-water 
} hathnot loft his Saltnefs, asto become potable: Butthe fame Man faith, that 
_ | hath become frefh. This Experiment feemeth to crofs that other of Pits, 
» | tions do the effe&. But it is worth the note, how poortheImitations of 
} Judgment, and fome good Light of Czxioms. For firft, there is no {mall 
_ | through fuch adiftance, as between the Low-water and High-water Mark. 
| hath in it akinje of Nitrous Salt, fromwhich, Sandis more free: And 
jis atbird point, that I fufpe@ as much, or mere than the othertwo; and 
| the Water rifeth ; butinthe Experiment of Tranfmifion of the Water,through 
‘ the Veffels, it falleth: Now certainit is, meas Salter part of Water fence 
