Scientific American Supplement, No. 832, December 12, 1891Various
Science
Scientific American Supplement, No. 832, December 12, 1891
Various
Science -- Periodicals
"La Savoyarde" will appear small also if we compare it with some
celebrated bells, that of the Kremlin of Moscow, for example, which
weighs 201,216 kilogrammes. One detail in conclusion: "La Savoyarde"
sounds in counter C. This had been desired and foreseen. The number of
vibrations, that is to say, the _timbre_ of a bell, is in inverse
ratio of its diameter or of the cubic root of its weight, so that in
calculating the diameters and in designing "La Savoyarde" the _timbre_
was calculated at the same time.--_L'Illustration._
* * * * *
[FROM THE SUGAR BEET.]
NEW SUGAR ITEMS.
FRANCE.
Water that has been used to wash frozen beets contains a small
percentage of sugar. As the washing period, in such cases, is longer
than with normal beets, the sugar in beet cells has time to pass
through the outer walls by osmosis. The sugar loss is said to be 0.66
per cent. (?) of the weight of beets washed.
Well conducted experiments show that in small but well ventilated
silos, beets lose considerable weight, but very little sugar. On the
other hand, in large silos with poor ventilation, the sugar loss
frequently represents four to six per cent. When fermentation
commences, the mass of roots is almost ruined.
Sodic nitrate, if used upon soil late in the season, may overcome a
difficulty that has been recently noticed. Beet fields located near
swamps that are dry a portion of the year have suffered from a malady
that turns leaves from green to yellow, even before harvesting period;
such beets have lost a considerable amount of sugar.
A new method for the analysis of saccharose and raffinose, when in the
presence of inverted sugar, is said to give accurate results. The
process consists in adding sulphate of copper and lime to hot
molasses, so that the oxide of copper is changed to a protoxide, and
the invert sugar becomes water and carbonic acid. The whole is
neutralized with phosphoric acid. There follow a great number of
precipitates; the exact volume of liquid in which these are found is
determined after two polariscopic observations.
It has been constantly noticed that samples of carbonatated juice vary
in composition with the part of tank from which they are taken. If
some arrangement could be made assuring a thorough mixing during the
passage of carbonic acid, results would be more satisfactory than they
now are. If gas could be distributed in every part of the tank, the
lime combination could be made perfect.
Notwithstanding the new law regulating quantity of sugar to be used in
wines, ciders, etc., there has been, during 1890, an increase of
nearly 13,000 tons, as compared with 1889. Consumption of sugar for
these special industries was 33,000 tons; alcohol thus added to wine
was about 71,000,000 gallons.
Public-domain text, read in full here on John Shaqi.
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