An account of a useful discovery to distill double the usual quantity of sea-water, by blowing showers of air up through the distilling liquor : $b and an account of the great benefit of ventilators in many instances, in preserving the health and lives of people, in slave and other transport ships ... also an account of the good effect of blowing showers of air up through milk, thereby to cure the ill taste which is occasioned by some kinds of food of cows.Hales, Stephen
History
An account of a useful discovery to distill double the usual quantity of sea-water, by blowing showers of air up through the distilling liquor : $b and an account of the great benefit of ventilators in many instances, in preserving the health and lives of people, in slave and other transport ships ... also an account of the good effect of blowing showers of air up through milk, thereby to cure the ill taste which is occasioned by some kinds of food of cows.
Hales, Stephen
Seawater -- Distillation; Ships -- Heating and ventilation
88. Scalding-hot musty Vinegar was cured by repeated Trials, of near
three Gallons in each Trial, by ten Minutes Ventilation. And giving
Vinegar a scalding Heat, does not weaken or damage it, as it does Wine,
whose vinous Spirit is carried off both by Heat and Ventilation; for
when some strong musty Raisin Wine was ventilated hot, it was cured
in five Minutes: But the vinous Spirit, which strongly affected the
Nose in flying off during Ventilation, being gone off, the vapid Wine
would not kindle into a Blaze, when thrown into the Fire, as it did
to a great Degree before it was heated and ventilated. Neither musty
Wine nor Vinegar were cured, tho’ something bettered by 30 Minutes
Ventilation, when cold.
89. Mr. _Jones_, a Chemist in _Cranbourn-Ally, Leicester-Square_,
ventilated a Gallon of Proof Malt Spirits 15 Minutes cold, in which
time it wasted two Ounces and half; whereas a like Quantity of common
cold Water wasted but half an Ounce in 15 Minutes Ventilation, _viz._
but one-fifth part of what the Spirits did; and the same Spirits
ventilated hot, wasted no less than 5 Ounces in 5 Minutes; which
Ventilation made them sensibly better tasted than the unventilated. But
the great Waste shows that these volatile vinous Spirits, ought not to
be ventilated, neither hot nor cold. Besides that, the 15 Minutes cold
Ventilation had but little Effect in bettering the Spirit.
90. In order to know whether Fish in a Vessel of Water would live
the longer for having Showers of Air blown up thro’ the Water, _May
25, 1756_, at seven in the Morning, the Wind N. E. the Mercury in
_Farenheit_’s Thermometer, 50 Degrees, and it continued so cold, that
at one o’clock it rose but to 60 Degrees; I put twelve Dace into a Pail
_A_ in two Gallons of fresh Pond-Water, thro’ which a Stream ran, and
twelve more into a Pail _B_, with the like Quantity of Water; one of
which Fishes in _B_ was sick, as appeared by turning its Belly upwards;
as were also two Fishes in the Pail _A_, which was occasioned by being
all brought in a Pail above half a Mile from the _Thames_.
91. At 45 Minutes past 8, most of the Fish in the Pail _B_, were turned
Belly upwards, and lay as dead; at 30 Minutes past 9 seven of them were
dead; at 30 Minutes past 11 all but three were dead; at two o’clock but
two Fish remain alive in _B_; which remained alive, tho’ sick, at ten
that Night, _viz._ at the end of 14 Hours.
Public-domain text, read in full here on John Shaqi.
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