New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1878-11-16
SCIENCE FOR THE PEOPLE.

CALIFORNIAN SALMON FOR GERMASY.-Ihe
German Fishing Association II Berlin, not disooul"e
nv the failure last year Of their attempt to
californian salmon (Sdln0 Qttnd0 INTO Ine So'
lakes and riyers-Only about % 900 salmon oVS Ou' ~
the large number imported being saNed-u's rsS
another ATTEMPT this year which has been croWheu VIZ"
unexpected success. TAe German IsShR9 od-e"o ~
nounces the arrival at Bremen. on octoper - vi %
Fred Nother with $4,000 Californian salmon oNa' an
In excellent condition. the method Of transport ID
melting ice having proved satisfactory In every respect
The greater portion. Immediately upon the"
arrival, was handed over to Director haaA'
Of the Imperial Flsh-hatching Establishment, Nv
Hunlngen for distribution among the arthcial hSn-
culture establishments Of Hiningen Freiburg III bre
Can Tharand Rendsburg Lubbenchen. and Berheucheh'
OF the 100000 oya from America l&o'OVV "eIc
landed at Southampton-lOO,OO0 for the French GOV
eminent and 10000 for the English fshhatchmg eStap
hshments OF the remainder 100000 were for the lnSt
tttute for Natural History at Amsterdam ana @ooVVV
Tor the various German hsh-hatchinG establishments.
Theyouug salmon after being Matched will he distributed
as follows 90 600 for the ODER 10000 fer the Weser
10000 for the Rhine and 10000 for the Danube dis
lricts The remaining 10000 are TO nc ieit az the e
posal Of the artificial hshlatchng establishments OF
fTebuTg and Hunngen, Tor t6e puBoso % not u,
Iatcly asoertaning the suitability ana dallhcatns OF
Ccmany The thousands which in the previous wear
had been saved and hatched in these TWO
have prOyed that Californian salmon. IN regard 10 us
vyacity rapid growth. and It's vitality Tar surnsses all
the natlv" salmon species Ine 5
rom last wears failure having already reached length
email reasons for inducing the president Of the German
Fishing Association 10 make second attePt 10 hTO
duca the Californian salmon INTO Germany Inc dI9est
number III proportion TO the quantity OF Young saIon
so be distributed into the German rivers, has pee.
allotted To the Danube district as the temperature OF
The waters OF the German MYERS dlSchalglhg lutln-
selves into the Danube ana me Back StS HFo nan
adhered warm enough t. enable the imported CaiOih
salmon to find there suitable food and accommod"-
iiOn.
TIE ELECTRIC LIGHT IN MINEs.-Ihe Lon
don Mining Journal points out that aside from It's Othef
ADVANTAGES the success of the electric light would solve
mo t important problem affecting the lives OF many
persons now working in mines There appears to be
no reason" says The Journal "why electricity should
not be made applicable for mining instead OF lamps ana
this would effect what our mining engineers ana
foremost chemists have long been looking for. IL
would give the men light such as they have
never drcamt Of enabling them 10 get much
larger quantity OF coal IN gwen tlnie 'n aI
IL is possible them brrug down by the light OF the
lamp which barely suces make the backuess OF the
working places visible It would also benefit both mas
tcrs and men, and greater safety would DC insured
for explosions would be all but impossible whilst the
miners would be better able to guard against lAis o
roof aud coal"
ENCKE's CoMET.--Mr. j. d. Hirst writes to
The English Mechanic, from Sydney, New South
Wales, on August p, giving some interesting
Particulars Of the appearance OF this now
famous visitant although DO new light is thrown
on the question of its retardatOn The fact, however
that tenthmagnitude star was seen through the nu-
pleus OF the comet, IL even more hTlhluS
the tenuty Of those bodies than the visibility OF
Arcturus through Donatis comet. Mr. Hrst writes
this comet has been visible here for the last fortnight
Its position very favorable for observation, as 1t
now about five past its meridian passage by the
time IL s dark enough TO satisfactorily distinguish IT,
Unfortunately too the part OF the heavens IN winch
appears sirgulay bare Of stars suitable for complr
son. Several observations have been made however
81 tire sydney observatory WIN some 0i lhe lun hid
In its vicinity the position Of which viii he determined
As soon Us they can be observed with the transit The
comet is very incOnspcuOus OBJECT, even with allow
power and the full apcrture of the 2 inch sydney re-
tractor. II appears circular nebulous body show
nnccns on the evening OF the 2Oth August
Uagnitude stars were observed in the field with
comet the motion OF the latter rendering Il apparent
that II must pass very close, II not immediately over
one OF Them This actually took place just before the
comet set. the Of the comet passing directly over
the star IL is interesting record That this faint tenth
magnitude star was not even dmmtd much less 0Dht-
Grated by the nterpOstOu OF the densest part of the
comet II shone night through the centre and most con,
densed part as bright as IL had before appeared against
the DARK background of the sky The other star OF the
same magnitude in the field formed accurate stand
nrd OF comparison by which to determine any dminu-
NOn Of light IN the other
How THINGS ARE SEEN.-It is stated in
The London Times that Dr. Boil has discovered that the
phenomenon of vision IS case Of vertable photography,
that subsequently DR., Rhine has discovered the
organ by which purple pigment in the last retinal
layer Of the is regularly deposited. Without IN any
way discredling these discoveries, The AhenGUm calls
attention to passage a paper by Sir John Herschel.
printed in the Royal Socety's Transactions III 1912 IN
which he stated drawing conclusions from hOlhe re-
naTkabe Photographic effects winch lie was then study
ing the phenomeuOn Of vision was or Photographic
origin the images OF external objects being printed by
the solar rays the Tena or the chOrOd coat OF the
eye
RAILROAD ACROSS THE SAHARA.-M. DupOn-
che engineer n-chief Of the Ponts-etChaussees,
lately sent Algeria 10 examine the geological
formation the land 10 the south OF the colony with
view to the establishment Of trans Saharan railway,
and 10 explore far as practicable the borders Of the
great desert He has made his report, from which
IL appears that the projected railway would run from
Alcers to TimbuctOo, distance Of about 100 miles.
NJ Duponche states that the principal portion Of the
line-that which would pass by LaghOuat and Taguin,
crossing the oasis of Jouat and terminating at Tmbuc
ZOO OIL the Nigcr-wOud during nearly its whole
tent on quarteary deposits layers OF sand aud, toward
cIc observation-disclosures obstructiOus would have to he en-
couutercd The Sahara has always had the reputation
Of being exceptionally hot region such is really the
case although the thermOmcIical observations OF late
explorers, particularly Nm. Duycyrer and NatOne, re-
o. lCIej m 55 F6r bnt ,ccon6f nnsf he
taken the great variations which OCcu in the twenty
n{Sbt succeeds fcmpclafure of 1910 Fair IN Tie
day time That. however Is not considered any Obsta-
Gle. The great difficulty 10 be overcome would be the
want OF water NJ. DupOnche considers that this even
can be surmOunted. He calculates that for three
daily, the amount Of erTeqWrcd would DC 1000 cnc
nefe and believes that the engineering science Of the
Jav rs 6uc Sufficient TO supply even a much greater
quantity at the requisite points.
COOLING WATER.-A simple contrivance for
cooling water has been invented by NJ. TOseln, OF
France II described in Les 1ondes and consists Of
cylindrical cup for holding any liquid into which may
be plunged inner goblet, shaped ike an inverted
truncated cone, and having lid which rests the
outer cup. Putting $50 grammes Of nitrate OF ammonia
In the inner goblet filing II with cold water, and stir
ring II 40 as To hasten the solution the temperature Of
the outer uud reduced 70 at least 40 c. or 22s
L. The salt may he used for an indefinite period, 10y
spreading It on plate after each tra ana exposing It
10 the sun until u Cstalizes anew, The inventor
pares salt which VIII lower the temperature 2o'C OF
Boo F., IN the Warmcst countries.