tles of
Wine or other liquors more coole, than the Earth or that Sand alone will
do, I have not yet had opportunity by sufficient trials fully to satisfie
my self, and therefore resign that Enquiry to the Curious.

5. For the cooling of Air, and Liquors, to adjust Weather-glasses (to be
able to do which at all times of the year, was one of the chief aimes, that
made me bethink my self of this Experiment;) or to give a small quantity of
Beer &c. a moderate degree of coolness, it will not be requisite, to employ
neer so much as a whole pound of Sal Armoniack at a time. For, you may
easily observe by a seal'd Weather-glass, that a very few ounces, well
pouder'd and nimbly dissolv'd in about 4. times the weight of Water, will
serve well enough for many purposes.

6. And that you may the less, scruple at this, I shall tell you, that even
before and after Midsummer, I have found the Cold producible by our
Experiment to be considerable and useful for refrigerating of Drinks, &c.
but if the Sal Armoniack be of the fittest sort (for I intimated above,
that I suspected, 'tis not equally good) and if the season of the year do
make no disadvantagious difference, the degree of Cold, that may be
produced by no more than one pound (if not by less) of Sal Armoniack, may,
within its own Sphere of Activity, be much more vehement, than, I presume,
you yet imagine, and may afford us excellent Standards to adjust seal'd
Weather glasses by; and for several other purposes, For I remember that in
the Spring, about the end of _March_, or beginning of _April_, I was able
with one pound of Sal Armoniack, and a requisite proportion of Water, to
produce a degree of Cold much greater, than was necessary the preceding
Winter, to make it frosty Weather abroad; nay I was able to produce real
Ice in a space of time, almost incredibly short. To confirm which
particulars, because they will probably seem strange to you, I will here
annex the Transcript of an entry, that I find in a Note book of the
_Phaenomena_ and success of one of those Experiments, as I then tryed it;
though I should be asham'd to expose to your perusal a thing so rudely
pen'd; if I did not hope, you would consider, that 'twas hastily written
onely for my own Remembrance. And that you may not stop at any thing in the
immediately annext Note, or the two, that follow, it will be requisite to
premise this Account of the seal'd Thermoscope; (which was a good one)
wherewith these Observation