National Republican. (Washington City (D.C.)) 1872-1888, 1882-06-03
SCIENTIFIC GOSSIP.

THE electric light will affect tho co'ors Of cloths
MS well as paintings in the same way, but not so
quickly, as sunlight.
THE municipal council of Merces, Spain, have
decided TO establish a school for training mechan-
ical and mining engineers, foremen OF works, en-
glne-drivers, and iiremen.
MACALLISE, an albnloid obtained from the bark
of the macallo, n tree which grows in Gucatan, is
recommended by DR.. Rosado MS superior to qui-
nine in the treatment of intermittent fevers.
In France there are 25O establishments engaged
in making sugar from mAngel- -wurzcl, and eigniy-
three of these houses employ what is known us the
diffusion process, u method which Is likely soon
to be in general use.
DIR. MIGUEL FARAGAs ascribes the aroma Of
roasted coffee to peculiar subs called
cafeone, which is developed during the process Of
roasting Its action on tho heat is opposed to that
caffeine as 1t increases the force and frequency of
its pu'sations.
PROFESSOR KILIscHEr, who has been making nm
extensive series of researches on the structure of
| the metals concluded that most of the metals arc
naturally crystalline, and that when the crystalline
structure has been lost by mechanical treatment
1t can in most cases be restored by the action Of
heat.
| DR.. SPRING states that he has prepared Woods
| Alloy, which me!ts ut 65o, by COMPRISING, at
| $500 atmosphercs, iron filling with bsmuth, cad
MUM, and tin in proper proportions. He also OBJ
| tained Roses alloy, which consists of lead, bis
mulh, and tin. and also brass, by pressure of the
| constituent metals.
| NEW school Is to be opened in Paris for in
sruction in industrial chemistry and physics.
lis object is to enable young men to acquire special
knowledge which will enable them to I'LL i'm
portant positions in works and in manufactures
of scientific instruments, and also TO qualify them
| for undertaking original chemical Investigations
AT the late annual conversations given by the
| president of tho Royal Society, London n Sellon
and Volkmar secondary battery was exhibited.
Each of the two cells weighed only eighty-tiyc
pounds In ALL but they were capable of maintaining
II platinum rod O.l6j inch in diameter and about n
foot long in condition of bright incandescence
| for two hours.
1T is claimed by NM. Hautefeuille and Chappins
that by comprising, at about l25 atmosphcres, O
mixture Of oxygen and ozone in q bent tube, par
| of which was cooled In n jet Of liquid ethylenc
they obtained ozone in liquid drops Of dark in
| digo. blue color The Yaporlzaion OF the liquid
they say, is not very rapid even at the ordlnar!
atmosph eric pressure.
LATE experiments by Professor Phillips appea
to confirm the theory OF Froyug that plauts alsorl
all soluble matters indlscriminatoly through thei
rootlels. and that the absorption of poisonou
metals causes no disturbance until a certain de
gree of ofconcontraton Is reached, when the plan
rapidly withers and dies. Its thus of the creates
importance 10 prevent any orop'growing soil from
becoming impregnated with any poisonous Gle
ments.
THR Sanitary Enquirer regrets that the bill legal
izing the sale OF skinned milk has passed tn
State genate. II has had occasion repeatedly
censure any measure Of this kind. While admit
ting that commercial interests ought to be pro
tcced, 1t insists that when 1t is question Of per
mitt,ng the sale OF IN unwholesome article Of foo
the public health demands that such articles q
D skinned milk should be emphatieally con
J demned.
METHOD Officiating by means Of petroleum hn
lately been devised by NJ. Pestlund. Ho uses onl
the less volatile oils In order to diminish danger
but ho does not use wi0ks, however He has re
source to the pressure produced by compressed a
TO cause the oil to rise in tho burner the pressul
being effected by the Injection Of air into the res
eryoir by means Of tube aud hollow indie
rubber device alternately allowed to compress al
y expand,
a WHEN the vessel La Province, which sank
the Bosphorus, was being ialsed the telephor
!, was added to the divers equipment, one Of III
. glasses of the helmet was replaced by a copp'
!. plate in which a telephone was inserted so TIN
g the diver had only to turn his head slightly
o order to receive his instructions and report VIII
!, he had seen. The adoption OF this means OF con
i munoation in diving operations will, In case
n danger or accident, tend TO insure safety to ly
Q tint otherwise would have been sacrificed