New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1879-06-21
SCIENCE FOR THE PEOPLE.

A CHINESE TILE FACTORY "A correspond
ont of tn, London Builder recent account OF MS
Vstto one of the mining districts OF China thus ue-
scribes the Imoerla tile maaufastory Mt Lien Au'
about fifteen miles west OF Pesin In TINS factory al
ths yellow tiles aud bricks required Tor imper" p"
tng are made as large numbers of green buo anu
other eoored tiles for various ornamental purposes
The m.teris used is hard blue shae, nearly AS nara
rs slate Ths ia allowed to lie in heaps for some time'
II is then grouud poSder by granite rollers On
stone door thirty forty feet In diameter roe pow"o
is then stored IN heaps and taken 70 the works as r
ourel. For ordinary work the powder Is mixed Win
proper proportion OF water and moulded in'o arg
bricks which are laid out dry for some hours aior
which they are dealt with by the moiSiers "no"
bricks are 70 have moulding on them' say lor o'Pue
a wall. the plan OF operation is as foho"S' wv
pieces Of wood cut 60 the shape OF the mouuuS,
a., 49,, uoriy,+ on A slab The clay brick Is placed
betTeen them and two men tine moul1ings roughly
along with chises They then apply straghV e"Hrs "
test the accuracy their work. aud finally rub tue cages
with N Guilds somewhat In the same way as plasIerers
MAKE moudings at home The brick Is then pas'eu W
third man. who cuts any necessary holes In H. ana 10
fourth who trims it on and repairs any defect lne
IN lre Orndu ntdl iiles and bricks A,D
1ashsd OF with tools exactly similar to those used Tor
modelling clay in Europe some OF AIS ,Ss tricks
aud tiles baked in ovens ana then ai'ei IN orS
g1 P sr9 appears to be nrstTale aud
tue number of people employed wncn they are o"'' -
about 300
CARRIER PIGEONS IN Wharf.-The carrier
Tir,on service now in fun operation IN France "n"
6a beeu included in one OF the military departments
under the head Of aeralI communication The NUMBER
birds fed bv the Government 6000 These pigeons
are placed in Paris and twelve other large iorunou
towns A number Of soldiers and officers have peen
taught the treatment and rearing of these birds ana
Of Pubc Instruction aud the Minister OF Asricul'uie
have established prizes Tor pigeon races
SPECIFIC GRAVITY BALAYCE.-M. Gannai mas
recently devised simple means OF deterinlnluR .'
specific gravity Of liquids with his deus'meio
lvlrostatdue all calculation is oOVlated' anu 'no sp
cfe gravity is ascertaned by simply readhg le "e'I"
on the balance This apparatus lie made In the form OF
an olive so that bubbles OF air shall not attach them
selves toits sides. The olive OF glass or 'netH mas
volume exactly equal TO one decimal SUBDIVISION OF
GU c metre. There two different methods e'nlioSeu
&, fIe ,acticil use the apparatus ~ We may sus-
,o II o the platform Of the balance and after having
NJ, 1,.4t an equilibrium we plunge it into the liquid
tho briuu is then destroyed by the loss OF weight
Of the olive ana the number Of grams which IL Is neees
s9ry 10 III TO the scalepan to restore the equilibrium" Is
the exact specific gravity of he liquid % OF the hqo
whose specific gravity desire TO ascertain may Do
mi in glass vessel pan OF the balance balance
tho scae-pn-, aud then suspend he oVe ~ SnS lY
aid he Scale dt,cends on side which the olive is
in The other pan to restore the equilibrium Is equal TO
the specific gravity OF the hqud'
FISHES OF THE DEEP SEA.-At recent
meeting of the Chrisana Society OF Science Mr. Robert
Coe stated that the deepwater fishes collected during
The last Atlantic expedition amounted to tmrtYthree
suece and proved of great interest to science az
The FISH had with a few exceptions, been taken from
depths from which no Arctic fishes had previously been
obtained. The apparatus employed the socalled
tr net constructed the principle as that en-
Moved bv the English fishermen on DOggersbank. FISH
were taken up that apparatus from depths 81 l4oo
ma 500 fatloms Five species proved TO be entirely
new 10 science and 70 classify one OF
them under new genus. This caught at depth of
] 900 fathoms, ard was about foot long While
Alive II was beautifully rosec0lored all over but Of so
soft and gelafnuus q substance that IL half trans
parent and heart could be performing lis func-
tions and large proportions Of the bran the entTas
aud the whole backbone visible through the skin.
The abdominal fms were transformed into two long,
split threads which gave the fish peculiar appear
ance 1t was named Rhodchtys Regina, and belongs to
group Of the genuine deepwater fishes which is chiefly
limited 10 the trOpc Among the other species sew
cra were only through single specimens scattered
here and there IN museums. and the descriptions OF
which are generally incorrect and defective. The genu
me Arctic genus LBcCde of which, up 10 the present
time only few specimens have been found near Green
taken nv chance the stOmachs OF shaIhs) appeared
10 exist quantities every where al these great depth
where the temperature OF the water is under zero III
nas ouv been tie lack OF suitable apparatus which has
until nov prevented the discovery.
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