The Cincinnati daily star. [volume] ([Cincinnati, Ohio]) 1875-1880, 1880-02-03
THE DAILY STAR
sCINTILLArloNs OF SCIENCE.

SSAN AALA<A1AONS OE SCAENCEs
An effort is making to secure tele
graphic communication between Pari
and the principal cities of France by
system of underground wires.
If salt is added to meat in large guam
titles, it prevents the appearance Of tn,
red color; but if it is applied little at .
time, and the meat is afterward smoked
agood red is obtained.
Rubidin is extracted from the Cucumil
anguria and the tomato by means Of
ether, which dissolves it, along with an.
other but yellow coloring-matter. After
the ether is evaporated the residue il
treated with anhydrous alcohol, which
dissolyes the yellow compound and per.
Nuts the rubidin to solidify in the form
of small crystals
Flesh-meal has been used with very
satisfactory results as food for horses.
Their appetite and physical condition
generally were improved. In order, how
ever, to facilitate the assimilation Of the
albumen, to every kilogramme there were
added 5.25 grammes of chloride Of potas-
sum, T.9 grammes Of phosphates Of
potassium, and 20 grammes Of phos-
phate OF magnesium.
As the results of many any apparent
/ carefully-conducted experiments,
Kirehner arrives at the conclusion that
the cream of milk deposited in tin pans
rises better than that of milk placed in
wooder vessels. 1t has also been found
that usually larger yield of butter is
obtained when the milk is cooled by
means of ice than when the milk is al
lowed to assume the desired temperature
under ordinary atmospheric influences.
An interesting account of the artificial
production of oligiste is given in the
Italian Chemical Gazette. Pieces of lava
from Vesuvius were placed in a concen-
trated solution Of common salt and then
introduced into a bottomless crucible,
where they were subjected to the heat of
a Bunsen burner for several days At
the end of that time the fragments were
seen to be covered with hematite, and
scales of oligists were scantily dispersed
over the surface.
1t is reported in Reimann's Farber
Ze:tung that DR.. jacobson cnoverts the
hydro-chlorate of rosanilin into a sub
acid by acting on the anhydrous salt
with chlorinized sulphuric acid. This
compound is an exceedingly valuable
agent for the production of sub-acids. It
acts less violently than the tuning sui |
phuric acid commonly employed, and |
yet forms sulpho compounds with ease.
The coloring matter thus produced can |
be used in woolen and silk dyeing in acid
baths, and can be advantageously asso-
ciated with indigo extract, &c., for the
production of various browns.
DIR. Begg is very able divine of the
free Church of Scotland, and few men
know better the duties of his office. In
imitation Of certain popular preachers"
OF the day, who are remarkable mostly
for their unconscious ignorance of sub
jects upon which they discourse with all
the amuseing positiveness of assumed ON
niscience, he recently selected for his
topic the Fay Bridge disaster, basing his
remarks on the words, "The bricks are
fallen down, but we will build with hewn
'tones;" Isaiah tx, 10. He has now to
1igest at his leisure the indignant letter
IT the contractor who furnished the
bricks for the bridge, and who has the
lard logic OF facts on his side when he
ays that the bricks we're of the best quail
ty, and that it was not the bricks that
ave way, but the stonework.
To determine quantitatively the fats
Ind resins in cements and lubri-
ANTS the niztun is heated upon
he water-baM with sufficient
luantity ofssoda.lye and alcohol until
aponifcation is effected. After the alco-
lol is driven off by heat, the residue is
aken up in water and treated with {
lydrochloric acid. When heated on the 4
vater-bath, the fatty acids and the resins \
low collect together, and after cooling
nay be collected and separated from the t
iquid, washed with cold water, covered
With several volumes of water, and J
leated with the gradual addition of sodic (
'icarbonate in small portions. A soap t
s thus formed from the fatty acids and i
lissolved, while the resin floats in the n
liquid or is deposited on the sides of the Il
,essel and may be separated by filtration. a
The fatty acids in the solution of SOAP 8
re determined in the usual manner.
1t has been definitely established that
here are blonde persons in Persia, and
hat they are in the proportion of 3 Der A
ent. to the whole population. M. Petri- ;
nent, Of the Archaeological Society Of :
'aris, has taken the pains to verify Ma I
aillac's statement regarding Persian a
londes by engaging the services of .
atiye scholar named Mira Mohammed. q
'esides establishing the fact of the ex. =
,tence of blondes and their relative =
timber, the Persian doctor gives the 3
dditional information, that after the = =
lpse Of one or two generations blonde i
hildren appear in what are nominally
runette families. This is manifestly the q
esult of remote mingling of races. !,
,ong ago, as tradition has it, white men. =
heitans or demons, came from the North. 4
o doubt as conquerors. The brunettes +
ill retain an aversion 10 blondes, al. q
nOugh born among themselves, and tic !,