Savannah morning news. [volume] (Savannah) 1868-1887, 1886-07-26
POPULAR SCIENCE.

When exposed to the air the sugar of
milk, which differs somewhat from other
sugars, changes TO acid of milk or Tactic
acid. The acid causes the caseine and
albumen to cOagulate or become solid and
curd il thus formed. When the milk rests
the fat separates and rises to the surface.
because it is lighter than the other pOr-
tions and is known as cream.
A cheap wash which is said to be fire.
proof can be made as follows: To one
bushel of lime add one pound of salt and
one pound of white vitriOl. Add sufficient
water to Stake the lime and make it about
the consistency OF common whitewash;
then to each gallon of the wash add one
quart Of skinned milk and apply a libe-
raj coat with a whltewash brush.
The SCOT falls down the chimney Just
before rain because it absorbs the more
abundant moisture and becomes so heavy
that its light attachment to the chimney
no longer supports it. The frog comes
out on the banks and the toad visits I'M
accustomed places at the same time, be-
cause the more abundant moisture keeps
their damp surface from drying too rap
idly.
Contrary to the general practice fol-
lowed, DR.. BOucheron, in a note to the
Academy Of Sciences, advises diabetes
to abstain from albumlnOid food and al
cohol, as well as from hydrOcarbOniZed
food. By this means, according to him,
the sugar will disappear in three or four
months. The bOulimia and polydipsia
are the first symptoms to give way, and
strength will return with the general I'm
provement.
Colored glass, writes specialist, Is OF
two kinds: One kind colored throughout
the whole substance and called pot metal,
and the other colored only on one side and
generally called coated glass. Red or
ruby glass Is almost Invariably coated
glass; the other cOlOred glasses are gen.
orally pot metal, though they are also
made IN coated glass. The use of enamel
colOrs marks glass painting { a work
perfected by the aid Of fire. to have been
executed not earlier tnan the middle of
the sixteenth century; but il the glass
has also been cut with the diamond the
production is of no earlier date than the
seventeenth century.
A correspondent of the English Me-
chanic says that he used the following
recipe with the greatest success tor the
cementlng of iron raIling-tOps, iron graf
ing to stoves, etc., and with such effect
as TO resist the blows Of sledge hammer:
Take equal parts of sulphur and white
lead with about sixth OF boraX; incor-
pOrate the three so as TO form a homoge-
neous mass. When going To apply il wet
it with strong sulphuric acid and place
thin layer of it between the two pieces of
iron, which should then be pressed to.
gether. In five days it will he perfectly
dry, all traces OF the coment having van
ished, and the iron will have the appear
ance of having been welded together.
Berzeius carbon. a species OF pencil by
means of which glass may be cut by pass
ing its inoandescent point over the sur
face, may be replaced with advantage by
small flame OF gas, in the following
manner: Fit the point Of an ordinary blow
pipe in metallic tube SO as TO form re-
tilinear blow pipe, put on the mouth piece
n rubber tube. connecting 1t with a gas
burner. and reduce the flame to one or
oue-and-one-half centimetTes in length.
Pass this flame over the glass and it win
cut it with great neatness. This action
is due to concentrated focus OF heat more
intense than an lncandescent point OF
Berzelius' carbon. TO begin the cut II is
necessary TO make n scratch with file,
and the blow pipe must be inclined sufll-
GENTLY 20 make the flame luminous at the
base, and blue in contact with the glass,
and to stretch along the glass. The glass
blow pipe may he employed to slit lamp
cnimneys their entire length and thus
prevent breakage when lighting.