10. Whether their Oyls in hard frosts are turn'd into true, that is, hard
and britle, Ice?
11. Whether they can freeze there a strong Brine of Bay-Salt; and a strong
Decoction of _Sal Gemmae_, or Soot; or a strong Solution of _Salt_ of
_Tartar_, or of _Sugar_ of _Lead_?
12. Whether they can congeal meer _Blood_, all the serous part thereof
being sever'd? Item, _Canary_ Wine; the _Lixiviums_ of Soap-boylers, and
such as are prepared of other Salts; as also, the Spirits extracted out of
Salts, as Spirit of _Vitriol_, _Nitre_, &c?
13. Whether an intense and lasting Frost makes any alteration in
_Quick-silver_, exposed very shallow in a flat Vessel.
14. Whether the Purgative virtue of _Catharticks_ be increased or lessened,
or even totally destroy'd by a strong and continued Cold? {346}
15. Whether Harts-horn thaw'd, and such like substances, using the same
method of Distilling, yield the same quantity of Liquor, which they use to
yield, when not frozen?