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Experiments in diffolving Lea. VII. 

Cer. Ld 
In which is foewed, that by the Solution of Salts in Wa- 
ter, fome certain fpace, more or lefs, is gained. That 
the {pace is different according to the Nature of the Sale. 
And what the juft {pace is, whichis gained. 
ee HE Fifth Enquiry is, Whether by diffolving of 
a Salt in Water, there be any {pace gained, or 
not. ‘That isswhether the Bulk of the Water be 
greater before the Salt lying in it be fully diffol- 
= ved, than afterwards. For tryal whereof, I 
» took a Bolt-head witha flender Neck 5 holding 
i fomewhat more than. pint; and filling it up to 
acertain place in the Neck ; I then put in an 
; . ~ Ounce or twoof Sait. And obferving the hight 
of the Water, both before it was diflolved, and afterwards 5 It plainly 
appeared, that there was fome, and that a confiderable {pace, gained 
by the Difolution ; the Water thereby finking feveral Inches below 
the place, where it ftood after the Salt was firkt put into it. 
2. §. From this Experiment it is plain, that there are Vacnities in 
Water. That is to fay, thavall the partsof Water are not contiguous, 
but that either betwixt, or in the Atomes of the Water themifelves, there 
are certain Pores, either abfolutely void, or at leat filled up with ano- 
ther more fubtile body which is: eafily eXcluded by the particles of 
Salt « by pofleffing the room of which the above faid {pace is gained. 
3: §. The Sixth Enquiry is, Whether the {pace be equally gained, 
by an equal encreafé of the fame Salt. 
4. §- For this I made two tryals ; the firt was this, Two half 
Ounces of salt Armoniac,being fucceffively diffolved in the fame Water 5 
both of them raifed up the Water in the Neck of the Bolt-head, equally; 
the firft 3 Inches 2, and fo the fecond. é 
5, §. The other was this, Four half Ounces of Nitre,being face 
cefflively diffolved in the fame Water, they all of them raifed up the 
Water in the Neck of the Bolt-head, equally ; the firfta little above 
two Inches, andthe 24, 34, and 4th, jaft as much, 
6. § The Seventh Enquiry is, Whether upon the Diffolution of 
feveral kinds of Sults, be gained fo many feveral quantities of {pace. 
For this I made tryal upon Eleven feveral Salts, (. salt of Tartar, 
Common Salt, Sal Gemmeus, Roman Vitriol, Nitre, White Vitriol, Green 
Vitriol, Alum, Borax, Loaf-Sugar, and sal Armouiac 5 of all which, I 
diffolved an equal quantity fe. twe Ounces, in an equal quantity. of 
Water, feverally 5 that is, taking freth Water for every Solution. The 
fuccefs was, That the Sal Armoniac raifed the Water 15 Inches. The 
Loaf-Sigar, 13 Inches and ghs. The Borax, a Foot.’ The Alu Ir 
Inches, and $ths Green Vitriol, 9 Unches and sh. Phjte Vitriol, 9 
Inches and 3th. Nitre, 8 Inches, and 3h. Rowan Vitriol, 7 Inches 
and 

