300 
Experiments in diffolving Lea. VIL 
CAP II: 
In which is fbewed, 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 Salt. 
And what the juft {pace is, whichis gained. 
2 HE Fifth Enquiry is, Whether by diffolving of 
a Salt in Water, there be any fpace gained, or 
not. That iswhether 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, holding 
fomewhat more than a pint ; and filling it up to 
e a certain place in the Neck 5 I then put in an 
> > Ounce or two of Salt. And obferving the hight 
of the Water, both before it was diflolved, and afterwards ; It plainly 
appeared, that there was fome, and that a confiderable fpace , gained 
by the Difolution 3 the Water thereby finking feveral Inches below 
the place, where it ftood after the Salt was firft put into it. 
2. $. From this Experiment it is plain, that there are Vacnities in 
Water. That isto fay, that all the parts of Water are not contiguous, 
but that either betwixt, or in the Atomes of the Water themfelves, there 
are certain Pores, cither abfolutely void, or at leaft filled up with ano- 
ther more fubtile body which is eafily excluded by the particles of 
Salt : by poflefling the room of which the above faid {pace is gained. 
3. $. The Sixth Enquiry is, Whether the fpace be equally gained, 
by an equal encreafe of the fame Salt. 
4. $. For this I made two tryals 5 the firft was this, Two half 
Ounces of Salt Armoniac,being fucceflively diffolved in the fame Water 5 
both of them raifed up the Water in the Neck of the Bolt-head, equally 5 
the firft 3 Inches 3, and fo the fecond. 
5. 9.; The other was this, Four half Ounces of Nitre,being füc- 
ceflively diflolved in the fame Water, they all of them raid up the 
Water in the Neck of the Bolt-head, equally 3 the firfta little above 
two Inches, andthe 24, 34, and qth, juft as. much. 
6. $. The Seventh Enquiry is, Whether upon the Diffolution of 
fevegal kinds of Salts, be gained fo many feveral quantities of fpace: 
For this I made tryal upon Eleven feveral salts, fc. Salt of Tartar, 
Common Salt, Sal Gemmens, Roman Vitriol, Nitre, White Vitriol, Green 
Vitriol, Alum, Borax, Loaf: Sugar, and Sal Armoriac 5 of all which, I 
diflolved an equal quantity fè. two Ounces, in an equal quantity of 
Water, feverally 3 that is, taking frelh Water for every Solution. The 
fuceefs was, That the Sal Armoniac raifed the Water 15 Inches. The 
LoafSugar, 13 Inches and 3 The Borax, a Foot. The Alum 11 
Inches, and {hs Green Vitriol, 9 Inches and sth White Vitriol, 9 
Inches and y Nitre, 8 Inches, and phs. Roman Vitriol, 7 nan 
and 
