New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1874-06-17
APPLIED SCIENCE.

u.ycAkEs FOR HoRsEs-Hay tablets, prepared
In the following manner. have been employed III
France for some time, % convenient ana Po,'
able feed for horses. Hay and straw, very hheis
Cut are we'll mixed with crushed oats or Iyedi OIL
moistened with solution of rapeseed OF a%d then
cake. and the mass again well wor hc" ~
formed into tablets under pressure
P.srr FOR IAprIs ON BOTTLES, &C.-An eAceheno
paste for fixing labels glass, WOOL OF paper "y
he prepared by dissolving ii parts py weight VI
common cline soaked day before in cold water,
parts of gum arabic, and some rock o""u,: ~ ~
Darts of water, at a gentle heat, win co nItnuea
ssfirr,ng until the mass uniform LaDels brusheu
with this and dried will adhere firmly, IL sum- ply
moistened with saliva when used
yARNIsH FOR ALCOHOL CAsKs.-Varnishng the
interior of clean dry casks with the following prep
ration said 10 close the crevces and pores OF the
wood and to render them perfectly tight for alcohol
as the material oxydizes after drying and De-
comes insolube in alcohol, and does not scale OH
Dissolve two pounds of leather clippings best hnely
chipped and previously boiled in water In TWO
ounces of oxalic acid and four pounds OF water on
water bath with continued stirring care being taken
not to Poong the operation more than neoe mSa
and dilute the solution gradually with SIX pounds OF
warm water.
A New MATERIAL FOR MODELLING (PlastilD)-A
new plastic material for modelling. invented by
Giudce of Genoa, has been adopted for figures and
ornaments in the modelling school of Genoa, as well
as by many sculptors. 1t is said not only to remove
some of the difficulties of modelling but to increase
the facility of the process II is lighter than clay,
having specific gravity of 139 and does not shrink
like it on drying, nor harden like wax, but retains
its Elasticity and softness at all times. IL Is III
soluble in water and contains no water, which, by
evaporation at ordinary temperatures, might prove
injurious to the health. It's great superiority Is Is
specially apparent i'll modelling colossal figures 1t
is sold of four grades, according TO softness, NO.
being the sottest.
PHoToGRAPmC MULTIPLICATION OF DRAWINGS
&C.-Benneder states that paper, prepared as fol-
lows costs but about onesiXth much as the ordl-
nary chloride of silver paper and is as well adapted
to the multiplication of drawings, and is simpler in
its manipulation. A solution of bichromate of pot
ash and abumen or gum to which carbon, or some
pigment of any desired shade, has been added is
brushed as uniformly az possible, upon well-sized
paper by lampght, and the paper dried in the dark
The dra wing executed fine transparent paper Tor
an engraving, wood-cut, &cl. is then placed be-
meath fiat glass upon the prepared paper ana eN.
posed to the hight for length of time dependent
upon the in tensty of the light The drawing Is re-
moved from the paper by lamp-llgbt. and after
washing the latter with water, a negative of the
drawing remains, since the portions of the coating
acted by the light become insolubie IN water
From such a negative any number Vi poSillNes eau
be taken IN the same way.
EFFECT OF TEMPERATURES on THE DREAMING OF
MnK.-The results of series of experiments, car
Iied through several months, by exposing differ
ent portions of milk in pans to temperatures of 4O
BE-, and 74o, and determining the amount of fatty
matter still present after various times of exposure
are embodied in a report by Schubert, from which
it appears that the separation of fatty matter from
the milk most rapid at 4Oo but that il was more
rapid at IA than at So the separation being
complete at 400 in IS hours than it at 81 after
10 hours After q hours at Az, only Q299 per cent
Of the fatty matter remained IN the milk, and while
dimnuton of it continued up to 80 to Sc hours, it
was 80 slight as to have no practical importance,
Tests made OH large scale OF Schwartzs method
of immersng the milk i'll deep vessels in ice-water
showed that it produced the largest yield of butter
for equal measures of milk and also that sweet
cream afforded more butter than sour cream. The
method possesses the additional advantage that the
milk sours aud can be preserved several days
in the lce-water without the least injury, and will
hear transportation 10 considerable distance be-
fore becoming warm ell ough TO change Cheese
made from it is also much better and less liable to
spoil in keeping, and since butter made from sweet
cream less milk and casein. according
to the analyses made, it consequently less liable
TO become rancid