Warren sheaf. [volume] (Warren, Marshall County, Minn.) 1880-current, 1895-03-21
SCIENCE AND INDUSTRY.

Several large canal projects are at
present under consideration by the
ministry Of roads and communications
in; Russia. One of the most Important
plans is not new, having been brought
4upla at intervals for a number OF years;
it is that for connecting the White sea
with the Baltic. The estimated cost
blythe latest survey is. 10, OO0. 900 rubles.
b "A writer in la Medicine Modern
asserts that sedentary }occu pations pre-
dispose to tuberculosis more than any.
Others. Italian and English statistics
show, he says, that there are 459 deaths
per 900 from this disease among stu
dents, seminarians and young clergy
men, while farmers, boatmen and
mountaineers enjoy almost completes
Immunity from it. S. '.. ,5 SIS ,'.ass
IF parents are tall;isays an author
lily, the children tend to be tall, but
the offspring of parents of unequal
height most frequently follow the
shorter. Excessive tallness is very
rarely perpetuated; even if both the
parents are above the average, the
height of the offspring is usually only
third of the excess reached by the
parents. .a s ii isffst ~
The construction of an object glass
of extraordinary size is, to be under
taken at the Jena factory fora tele-.
scope for the Berlin exhibition Of 1896.
It is to be 2lO, centimeters (about A.
inches) in diameter. This will be. the
largest object glass in the world, being
many inches larger than the great
Lick instrument. It's said that this
is the first object glass of abnormal
dimensions which has been undertaken
by the Jena factory. as
& An apparatus for burning coal dust
has been invented and brought out in
Germany. 1t is stated that the cons
sumption of even the most inferior
:lass of coal dust is attended with no
smoke, while the heat produced is so
intense that the apparatus has been
adapted in Berlin to smelling works,
and with excellent results. The gases
IS analysed contain 9.s per cent. car
,bonic acid, / per cent. air, 1912 per
cent. nitrogen. London Public Opin-
ion. s.5s5
/. "A collection of 22O human brains,
carefully prepared and classified by
DR.. Luys during his twenty years serv-
ice at the Saltpetriere and. Charlie hos
pitfalls, has been recently presented by.
MIN to the Paris Faculty of Medicine
for the Dupuytren museum The col-
lection is unique; itcontains all forms
IF mental disease, madness and idiocy,
and includes the only preserved brain
IF a hypnotized subject in existence.
I'm the case of 1913 North German
women, Prof. Ra the reports that gray
hairs appeared at the following ages:
In one, at twenty-eight years; in five,
1T thirty-four; in sixteen, at thirty five
10 thirty-nine; in thirty-seven, at forty
so: forty-nine; in forty three, at fifty to
s6fty-nine; in nineteen, at sixty to sixty
oine; in five, at seventy to seventy
nine, and in two at eighty to eighty
ave. t..s y,
For coloring iron and steel dead
black of superior appearance and per-
nanency the right article has long
been sought, and, to meet this want,
NJ. Manure now proposes a fluid, OF
which the following is the formula:
One part bistnuth chloride, two parts
mercury. bichloride, one part copper
chloride, six parts hydrochloric acid,
i've parts alcohol and fifty parts water,
these being, of course, well mixed.
Prof. Bartoli, during the great
eruption of Etna in 1892, measured the
heating power of the sun with the
oyrheliometer at different attitudes to
ind out whether atmospheric dust ex-
ercises any perceptible influence ON
the intensity of the suns rays passing
through it. The air was then filed
with an impalpable dust, which fell
very gently and gave the sun a slight
reddish tinge;, there We're no clouds
Ind there was n dead calm. He finds
that % per cent. of the heat trans
nitted by pure air was absorbed by the
Volcanic dust.
"A notion of the enormous sums of
money that Russia is pouring into the
Siberian railroad may be got from the
recently published figures of the finan-
:ial budget for. 1895. In that docu-.
nent the estimate for the Siberian
railroad proper for 1895 is S34, 261, 900
md for works auxiliary to that rail
-oad $l.273, OOO-say. total Of twenty
ave and half million dollars. The
estimate for 1894 for these items was
III, 1894, OO3-a about forty-three and a half
millions in two years. Beyond this it
is proposed to raise SIS, 1888, 900 for the
construction of other railroads, besides
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