New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1861-05-20


would receive no injury though s,rucs BY psan9
steamer. BY means Of these snail buoye ,he cable
could be raised for repair, and any damage done to
part would not destroy the whole. He would have
submerged batteries every 100 miles, and leave tho
wires very slack 60 that would better ress. ,rane-
verse currents.
In building the great bridge just completed asroee
the Rhine at Kehl IL was neceesary 70 nse
diving.bells to lay the foundations Of tho
piers. large number Of the worknen have been
attacked with affections Of the ear, and several lave
been made permanently deaf by their ongcon.iuDed
labor under pressure Of two or three ataopLere'.
M. Eugene Risler maintains that iron plays q
principal part in the nutrition Of plants: he shows
that in the roots seeds and white portions exists az
protoxde while in the green portions s in the form
OF peroxide. Expose vegetables to air and hgh; and
the protoxide becomes pc oxide with rapidly pro-
potioned 10 the Intensity Of light The chlorophyI 70
green because it combines the two oxides blue and
yellow; and they form voltsic pair which deeonpoe-
es water and the carbonic acid held IN solution the
car bon and hydrogen entering into the orysnism Nee
urnal nutrition s oxidation, diurns nutrition deox,-
dation; and the vegetable tissne il formed hks he
weavers, night being the warp day the wool with
the iron of the ehlorophyli to serve as the shuttle
The French Government has bored J0srteaaD wells
in the Province Of Constantine. in Algeria at an ex-
penae of only 500 each. These wells yield -,ms
10000 gallons Of water per minute and will 70 far -
render the country a desirable DIVE lmg-paee.
"A singular plant, the Drosero, bas just cone "a
notice II kills instantly all The flies that settle on ~
and is 80 exceedingly sensitive that the haiIe wat
which is furnished will converge the apphest OF
Of one siX-;housandh of grain of ammonia while G
single hair is affected by one 64,bousandth
The Soee y Of Acelmaton at Paris has bet it, bcek
Of apacas, and lie taking to replace them.
Nj. Roy has found that the fever which is pr,vs
lent in Algeria iue 10 the fact that in the region q
volcanic and primitive rocks the clay contains ljrs-
phorus, and THE, acted on by fogs and dews which
contain ammonia dIfuses its noxious Qualities N no
atmosphere and occasions fever. BY way Of testing
this theory be created artificial atmosphere Of me
Sort and breathing it, found be had Gil the s.sp-
toms of the African fever.
A Photographic fac-simile of the Domeeday Dook
is about be taken in the Photographic Office Of he
Ordnance Department at Southampton.
M. Testelin, in a little work published 10 Pane,
attempts 10 show hat the formation Of the Photographic
image is physical and not chemical effect. lie con
siders the electric polarity" 70 be the exciting
cause.
An Australian tree the ColhstcDsoa S0iigs.s, -
said to furnish wood equal " box, FOR engraving pur~
poses recent number Of the Transactions Of me
ROYAL Society Of Victoria contains wood cat exc
cuted on this wood.
Some of the little hoIer-wormsin the Mediterranean
have trick Of making holes through the telegraVhN
cables.
Ebente called IN this country hard.rubber, 10 PRO-
nounced by electricians be superior to glass fer en-
detrimental purposes Nj. vsrley has electrical ma
chine with disk of ebeue three feet in diameter.
Prof Challis Of Cambridge, England, has pub
forth the theory that magnetic currents are induced IN
the mass of the earth by its rotation. These currents,
he saws are subject modification by the eaItl move
uept of translation, and also by the want OF perfect
symmery in form. These deviaiions from synimciry
determine the direction Of the magnetic sireains
which appear from experiment to enter the earth 90
the north side Of the magnetic Equator and 70 iss0e
from it on the south side The earth Is thus VIA
magnet the streams Of which Of constant intensity
excepting SO far they may be disturbed by eosmrd
influence In this matter the and each Of The
planets act their part. That OF Jupiter likely ~ b
predominant, on account Of his large size and rapid
ro,atory notion aud the Professor saye it 10 not hnle
singular that the periodic time of Jupiter should corn
eide with the magnetic period discovered BY GsDcrL
Sabine. This period has been shown in this country 70
be the same as that Of the waxing and waning Of the
suns spots and it may very well be that the three are
produced by the came cause.