Idaho semi-weekly world. [volume] (Idaho City, Idaho Territory) 1875-1908, 1890-04-22
SCIENCE AND INDUSTRY.

SS'eNCE AND INDUSTRY.
. "A color test for railway. emn,ovo.
aae peen introduced in the shane ~
=, 80. w, consisting OF a revolving series
=. ooiored glasses lighted from babina
~ name and tinted like the lamns ~
the signal boxes. 'D' lamps OF
.hinamen are MAKING nona q.
california by going over stacLs ~ st ~
ia by farmers and clearing out
. .u9 mustard seed in It, One Chinaman
m'n save one hundred pounds or more =
az anu make better wages from what
VIC "hite man throws awav than
FARMERS have made from their grain
crops. 'AN grain
line spread of cancer in a small.
commune OF Normandy (St Sylvestre de
Courselles) attracted the a,tan.;a
Hrhaudet, as the disease had at
'aihed to fifteen per cent. OF the tota,
mortality. The cases were principally
inaies, ana as rule the cancer was To-
cated IN the stomach: hence DR.. Arnan.
oee thlnks that cancer is contagious and
Is propagated by water.
The fast fishes. according to Pro,
" Il. Goode, are of pointed build with
SS,ose-iyihg ms and are frequently pre-
uacious. Food fishes, on the other hand.
are often slow, and easily caught, but
are correspondingly prolific. The actual
speed OF hshes is not as yet we'll known:
Out as dolphiDs have been observed IN
SWIM round and round steamer going
az lull speed, their pace is estimated at
twenty miles an hour or more.
Quicksilver ore in LAYERS was discov.
cred IN the year 1879 at a place called
NikltoWka, in Russia. 1t is a station
On the Observation-Disclosures railway.
IN 1859 company was formed for work.
ing tnls ore, and work commenced in
the following year Thus since April.
1000, or whereabouts. the production of
quicksilver has become new branch of
mining industry in that country. which
promises to give fairly satisfactory re-
suits.
Every one knows that daltonism
consists in color blindness in regard to
certain hues, says the Transatlantic.
according to the researches of DR.. AL
Deftinl, this daltonism is accompanied
by corresponding deafness toward GER.
Tain musical notes. Those persons who
have not the sensation of red can not
distinguish the note sol: those blind tn
green can not recognize re; and to this
lack OF perception in hearing is added
the lncapacity to produce the notes men,
TONED by means of the vocal apparatus.
In Chemnitz, Germany, weavers of
tlcklng get 81 so per week, fustian weay-
ers W, sewers 81. 25, corsetmakers twenty
to twenty-five cents per day. At Bremen
male weavers earn from So to S3.73 a
week, women at S1.25 to SO. In Silecia
the average falls to twenty-nine cents
per day. Berlin engineers make from
seventy-five cents to 81 per Say. Work.
ers In glassware and porcelain make less
than seventy cents per day. These
hgures are from report of the Chem
nitz Chamber of Commerce.
Inquiries have been made as to the
nature of the natural concrete called
"tereteta," which has been referred to
in our Mexican correspondence as being
used extensively for station and other
railway buildings on the Mexican lines.
1t is mixture of broken pumice stone
and fine ash, that in process of time has
by the action of water and paessure been
cemented into beds of wide area. 1t is
quite soft being readily cut with saws
into any shape desired, thus making it
a cheap building material. Railway Re-
view.
Prof. Won Bergman, of Berlin, is
reported to have performed a remarka
BILE surgical operation. Two patients
were simultaneously brought to him for
operations, one requiring amputation of
the thigh at the hip joint, the other
needing portion of the humerus re-
moved on account of the bone being ex-
tensively diseased. the first operation
was the amputation, and then the sur
geon proceeded to excise the diseased
portion of the humerus. This made
gap in the bone, but piece of the thigh
bone was taken from the limb which had
just been amputated and fixed in the
gap, by which the continuity of the hui
merus was completely restored. Perfect
union took place, and the patient re-
covered with useful arm.