New-York tribune., 1875-01-13

pur6 metsti du oANOpt'VhohJ f~abS Pa~FOA''
ELTRINGIrE, A NEw MINRRAI.-Tho lava of FL |
triugen In the Leach District has been found to con-
tain in Che imbedded limestone new mineral sub
stance called Elt1ingite. by Lehman. Tbis asso-
erclv he dst;ngn;sheS IN its external appearance.
PRoBABIE REpucrIeN IN THR PRICE OF OLIVE
0Ih-It is said that the increased quantity OF onS.
oil now manufactured in Tunis ss so great as ~
likely to produce material depression 10 ~ ,n1 oesfy
Of this article. About $500 tons Vaiuea a. yasT "a
S700OO0 have beenishipped during tine paS' '0~~ " |
England, France, and Italy.
x, o rup IIsK OF SUBMERGED NET
wp,Rs-special attention N called TO the prSprlety
fforh,dd;no the use of submerged ne-weirs IN the
vaters of Lake Champlain for the capture oi white
ash a cpstom which, in the opinlon OF the Commits
Fieners will inevitably result, IA veIy rev geas,
in eansng the practical destruction OF this valuable
article of food
SuASovULrE-A New MNERAI---Wibel describes
a new mineral from the Peruvian guano, under the
name of guanOvute occurring in the eggs oil
birds found Embedded in the guano, IN the form Oh
pale yellow laminated crystals with silky luster.
and almost completely soluble in water. Ibe most
remark able feature of the mineral s the presence Oh
sulphate, hitherto known only IN tbe rare 'oo""h0
mineral misenlte.
THE PROGRESSIVE MOVEMENT OF AREAS OF GOLD
AIR.-Dove has attempted to deduce' from the h'e
aay means of temperature for European stations
some general views to the progress OF days Oh re-
rnarhable cold and finds that in the months OF jan
nary and February of the years 1859 1862 1870 ana
Isn numerous eases occurred to show, almost nul-
foFu,ly that the cold terms move westward over E
rome: result that may, perhaps, De cOnsIereu as
entirely in agreement with the deouctlohso o DuSnap
based upon the barOmetric charts prepared oy mm'
MINERAL SUBSTANCES IN THE ARTCULATA.-E
Heckel gives the result of series OF experiments
npon the ocalzation. heapiug up, so to speak, OF
yarious mineral substances in the artculata and It's
physiological results referring more particularly to
the administration to various species especially to
eockroaches and crabs of adet consisting OF metallic
arsenic aud -four After feeding with this substance
for 40 DAYS the animals dissected and arsenic
found jn the of the stomach. as also IN the
malpMgen tubes in the latter the indication being
most decided.
TEE PHYSICAL PROPERTIES OF HYDRoGENrUM.-
The interesting substance known to chemists as hy-
droQenium has been the subject of some physical
measurements by Dewar. who has attempted to
make new determination of its specific heat and
Its cOeficent of expansion. The only condition
under which hydrogenium is known to exist Is that
Of an ALLOW with the metals palladium, piatl-
mum etc As the result of his experiments with
palladium and hydrogen, the specific heat Of hydro
genium Is concluded to be almost exactly 0.i. Ihe
oOefeient OF cuDlcal expansion appears W pe very
nearly OOo0S5.
series of observations which prove how important
a part the onward movement of a bird plays in in
ereasinQ the efficiency of each stroke of the wing;
for supposiug that in its descent the wing did not
continually come in contact with fresh volume OF
air. it would act at a disadvantage; because the
downward impulse, which at the commencement OF
each stroke it gives to the air below, would make
that air. by much less efficient resisting
medium; while by continually coming III contact
with fresh body Of air. the wing is always acting
bird commences its flight II turns towards the
wind If possible, TO make up for Its lack of motion
on starting
CONTINUITY OF THE LIQUID AND GASEOUS STATES
OF NATrP:R-Prof. Andrews Of Belfast, at the late
meetiugof the British Association made communi-
cation in continuation of q memoir on the continu-
ityof the liquid and gaseous states of matter AS
the result of some of his recent Investigations
he stated that the compressbity of sulphurous
hauids unlike that of water dimnshes as the pres
sure increases A mixture of three volumes of car
bOBic acid and four OF nitrogen was subjected to
a pressure of 800 atmospheres at various tempera-
lures from @ to 4so c. with the very important re-
suit that. even at 2, the carbOnlc acid of such
mixture could not be hquefed under any pressure
Indeed the "cTitcal point" of carb0nc acid proves
to be lowered many degrees when that gas is mixed
with non lquefable gas such as nitrogen
GILT GLASS PRISM IN THE CONSTRUCTION or THE
CAMERA LUCIDA.-By taking advantage of the
property possessed by thin metallic films Of allow
ing the passage of direct rays through them. while
they reflect obhque rays from some other source,
Pref. Cow, of Rome has devised perfect method
for supervising direct and reflected image, as i
necessary in the camera lucida without the usual
fatigue to the eye Tie simply gilds the rejecting
surface of the prism, III Tho camera lucida with a
very thin film Of gOld and with Canada balsam,
cements to this surface another similar prism The
reflected image appears of the usual yellow coor of
gold by reflected light, while tue transmltted
IS difference that Is not only not annoylng:
but in some cases serviceable. The suggestion Of
Prot. GOvi has been adopted by Nachet in the con
suuehon OF various forms Of Gamer" iucda'
- $zsSs4.s ssas
FozoOS. IT'S ORGANIC CHARAcTER-The contro-
yersy as to the organic character of Eosoon CdRadense
still continues among geoOgists. 1t may be remem-
bered that the organic character of this supposed
fossil has been stoutly affirmed by Professors Daw-
soa and Carpenter, and denied by Prof King
and others One of the latest features of the contro
yersy was the opinion of Mr.. II. j. Carter who is an
eminent specialist in regard TO the lower orders of
animal life, and who expressed himself in the
strongest terms the opposite side. Dr. Carpenter
however comes to the defense of his views bv In
sistiBg that Mr. Carter has not made himself ac-
Quanted in the slightest degree, with what has been
written in support of the character OF these
objects, and that Prof Schultze, an equally eminent
specialist. is satisfied that they belong to the fOrami
pitera.
TnR ATMOSPHERE OF vENUs-Lohse has uvestl-
gated what would be the effect and appearance of a
spherical gaseous mass, by observer pass
ing over the solar disk and has sought to apply his
results to the possible effect of the atmosphere of
Venus on the phenomena of the Venus transit. In
conclusion be states with reference to the sOcaled
black drop phenomenon, that if the atmosphere of
Venus has density great that it untes the solar
n .s..s -