New-York tribune., 1872-01-30

gnn I'm match factories these pills have relieved op
oratves poisoned by phosphorus, and are thnreole,
much better remedy than chat proposed by NJ fesono'
the essence Of tcrcbenthine having been iUnnu VP'
duco violent headaches by continued use
Production OF ANuINE.-PrOf. SChnitEe nI''"'
announcement, at recent meeting Of German "SSo
citation which received with enthusiasm u oe'"S
garded pioneer discovery by rsearch IN nc" "v'u,
which is likely 20 be OF great ipiportance III "ppe"
chemistry. lie has succeeded 70 obtaining canc
acid hy the direct oxidation OF carbon WIN XII benn
acid I'm aIkae solution Oxac and other aclds iI M nnyn
also produced previously bv the same inr'r
i'm, r,y,phte and on distlaiion with sodal,me, gavo
bcnzole auG the latter. upon niiah" an" s''e'i""'
| reduction, yielded anime 80,
| pYRo-ELECTRCITY or CEYsrAiS.-licrr w.
Haukc has examined sixty varieties of topaz par
tcIory IN reference 10 their pyroeecric properties,
and has been led 10 the conclusion that pyroeecricity
s not necessarily correlated with hemimorphism nut Is
| n general property Of all CRYSTALS In hemlmorpmo
CRYSTALS the opposite cxtremes of The principal axis,
heur dissimiar. assume opposite polar conditions;
| while in cry stalls having the two ends physically sim
ity In hemimOrphic crystals the distribution OF eee-
city seems to dpSna & Sn ,s acrs9 by a
change of form; white in those crystals which are NOT
bemimorpho the distribution OF electricity depends III
great degree external form and Arrangement, ana
may, therefore, be modified by change Of shape
SoUNps FROM THE AURORA.-At q recent
mceting of the French Academy of Sciences Becquere
expressed the opinion that the docs produce
souud and in confirmation of this view cites the oh
soryaton Of Paul Roller, @ronaut, who started from
Paris in December last and descended "A hours after
ward in Norway, mountain at an elevation OF 1000
feet saw through thin fog. the moving Of the bril-
ham rays OF au aurora noIeaS sleag a nli" amd ND
load roaring was heard, which, when II ceased com.
petCly, was followed by strong smell OF sulphur almost
suocang" Prof LOons ana other meteoroiogists have
obtained no satisfactory evidence that te aurora ever
enits audible sound Ihey believe thaI t1e noises
ascrbed the due 10 other causessucb as
the wind, TO that low temperature or snow ana ice
which sometimes produces sudden in masses.
To pt,I-N Gr..AN- pI Il
Zsllvsk recentImemor states that the explosive
property ofome infammable substances depends upon
the hygrometro condition of the atmosphere that gun
powder and other explosive materials may become spon-
taneousy explosive without any elevation OF tenn
perature Of the air; but that the smallest quantity of
oXac acid mixed with such explosive material Will pre-
vent spontaneous action. He further states that this
fact may be expermenally proved ny aedng 10 any ex
amplea certain quantity OF oXauc acid after which the
plOding. fair inference seems tn he that the treat
ment suggested by Dr. Zaliwsh actually imp6irs that
property ia explosives which their value depends.
MAGNETIC PERTURBAIIONS.-The sO-called
solar explosion recently described by Prof Young Of
Dartmouth College did not contrary to his expecta-
tiOnsl produce specially marked simultaneous disturb
Of the magnets IN Greenwich Observatory. Prof
Airy Of the Observatory, I'm answer 10 Prof YOuDgs in
qury on subject, writes: The day one Of mag
nec disturbance, hut IL does not appear that any
markabe movement conceded with the beginning Of
your obseryatiGn There was sndden movement as
these rapid ana extraordinary movements Of the most
such magnetic disturbances on the earth as have been
frequently observed when solar spots appear indicating
that actual opening has been made completely
through the solar atmosphere.
APPARENT VOLATILIsATION OF SILICON AND
BoRoN.MM. Troots and Hautefeuille have presented
memoir to the French Academy of Sciences containing
account Of experiments made with pure silicon and
boron. Each by itself placed in porcelain tubes
kept AT very high temperature Gn slow current of dry
Vdr
the admission the tubes of huOride OF silicon chloride
of silicon aud uoride II boron, carefully noted. Sill
con Is under these conditions, apparently volatzcd form
ing smoke, which, IN cooler part Of the
tube Is condensed sometimes as amorphOns silicon some
times in crystalline state Similar results take place
with boron, but this apparent Noaulnatio Is que 10
simple mechanical effect. eODoint with the presence Of
compounds of silicon with chlorine and tuoIine, which
ciated n red heat
ELECrRoMoTIvE FORCE or INpUCIION.-Dr.
L. Hermann has given iii PoggendorG-s Aanaien, the
results OF series Of experiments undertaken by him for
the purpose Of ascertainng whether the clccrOmovo
force Of induction demonstrated by Faraday in liquid
conductors the that III metallic ones, other
conditions being the Since in the latter instance
the inducing force Is Independent of the nature Of the
metal the question arises. does this independence OF the
Of the induced conductor also extend To liquids
aud therefore to all conductors DR.. Hermann made
three experiments with three different rraDgemeuts,
all with the result Ho describes the most
full IN detail and then adds these experiments show with
certainty since the resistance in tue induced circuit ia
all casrs IL the same that The eectIomotvG lorce OF the
induced current is, ia the widest sense OF the word, en-
Iely independent of the nature OF the Induced con
ductOr
SELENITIC MOBTAR..-Col. Scott Of South
Keusngton. England, has invented mortar for which
several advantages claimed Ii is made by simply
mixing with the used in The preparation Of the
mortar small quantity Of suphae of line in the form
Of either natural gypsum plaster OF Paris urDt Cyp
sunni Instead Of suphatc OF lime, proo-suphae Of iron
Oroen NtroD may be used, better st, suphurc acd;
the of the the effect produced by this
d. id. However. sufficient acid If contained in gypsum
10 accomplish the end desired and the OF gypsum is
much the convenient. Tho mixture Is prepared in
the pan Of the ordinary mortar mill, lime added, an1
afteI being ground for three or four minutes the sand,
burnt clay other ingredients are added and the whole
ground for ten minutes more Thus ordinary lime j.
ri converted into a ceneBHOTtar which sets rap
idly aud 10 used for concrete in brisaying In
pias,erng at cheaper rate than lime prepared in the
usual way. Lime thus treated with snlphmc acid or
safed Tiles Joined together by Portland cement er
II days separated by weight Of SO pounds while
sand, under precisely the conditions required u
weight of 158 pounds TO overcome adht sou.
MEAT EXTRACTS AND BEEF TEA.--Dr p.
Miller has given, il Tie No,fteur ScjeafifQ,t
account of his researches or this subject, and bis
clusions are a. foows: Meat extracts are neither
directly indirectly food; for they do not contain
albumenoid matter. neither do the nltrogenous pinc
pies which they contain arrest dlsassimation that s
they do Lot prevent the waste Of the organic matter
which cOunpOses the body, IN smai doses, these
tracts uscf by the stmuan action 81 the potassa
salts which promote digestion and circulation III strong
dosostoO large at once-these substances may have
very Injurious effect When given TO eOnvalescents from
serious diseases especially il the system is exhausted by
prolonged abstinence. the poassa salts present IN these
extracts in large quantities VIII act DjIiousy,
because the system has lost great deal of chloride OF
sodium; instead, then, Of promoting digestion. these
substances will interfere With IL o. by the direct action
the salts of potash the blood glObues whereby the
absorption Of the by these glObucs is greatly
decreased ~ by the pTedominnCe OF such salts in the
serum OF the blood which only physically dissolve car.
homie acid and do not allow the normal quantity Of that
I've eXhaed aud thus impede the access of oxygen
Medical men should bear III mind that IL given alone
these extracts, and likewise beef tea, nurmen
and only tend 10 keep the convacscent weak being thus