Scientific American Supplement, No. 360, November 25, 1882Various
Science
Scientific American Supplement, No. 360, November 25, 1882
Various
Science -- Periodicals
The price paid for apples in 1880, when the crop was superabundant, was
six to eight cents per bushel; in 1881, fifteen cents. The proprietor
hopes next year to consume 100,000 bushels. These institutions are
important to the farmer in that they use much fruit not otherwise
valuable and very perishable. Fruit so crabbed and gnarled as to have no
market value, and even frozen apples, if delivered while yet solid, can
be used. (Such apples are placed in the water while frozen, the water
draws the frost sufficiently to be grated, and passing through the press
and evaporator before there is time for chemical change, they are found
to make very good jelly. They are valuable to the consumer by converting
the perishable, cheap, almost worthless crop of the bearing and abundant
years into such enduring form that its consumption may be carried over
to years of scarcity and furnish healthful food in cheap and pleasant
form to many who would otherwise be deprived; and lastly, they are of
great interest to society, in that they give to cider twice the value
for purposes of food that it has or can have, even to the manufacturer,
for use as a beverage and intoxicant.
* * * * *
IMPROVED GRAPE BAGS.
It stands to reason that were our summers warmer we should be able to
grow grapes successfully on open walls; it is therefore probable that
a new grape bag, the invention of M. Pelletier, 20 Rue de la Banque,
Paris, intended to serve a double purpose, viz., protecting the fruit
and hastening its maturity, will, when it becomes known, be welcomed in
this country. It consists of a square of curved glass so fixed to
the bag that the sun's rays are concentrated upon the fruit, thereby
rendering its ripening more certain in addition to improving its quality
generally. The glass is affixed to the bag by means of a light iron wire
support. It covers that portion of it next the sun, so that it increases
the amount of light and warms the grapes without scorching them, a
result due to the convexity of the glass and the layer of air between it
and the bag. M. Pelletier had the idea of rendering these bags cheaper
by employing plain squares instead of curved ones, but the advantage
thus obtained was more than counterbalanced by their comparative
inefficacy. In practice it was found that the curved squares gave an
average of 7° more than the straight ones, while there was a difference
of 10° when the bags alone were used, thus plainly demonstrating the
practical value of the invention.
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