Mower County transcript. [volume] (Lansing, Minn.) 1868-1915, 1872-03-14
Curious. Useful and k,cle>tif3e

O0o'AOuItA ab &OO0 ~ t0aC OF the latter.
Curious, Useful and Scientific.
NJ. o. de Benare has made some OK
reriments upon the deviation of the
pendulum at Callao. He finds that the
angular attraction Of the Andes is about
two minutes and eighteen seconds, and
that the level of the sea 10 elevated
one hundred and thirty. seven metres by
the same attraction.
Mn. JOIN DE- LAsu reports q speci.
men Of water-worn flint, undistinguish.
able from chalk flint, found near the
top of Mount Katahdin. He estimates
the thickness of the ice sheet which
broke up all the surface of New Eng
land to great depths at not less than
5000 feet.
Tn Japan Times SAYS that in the
interior Of japan, even where few Eu-
ropeans have been, there are shops
exclusively for the sale Of European
goods. Soaps, perfumes, clocks, COL
ored engravings, and beer are in general
demand, and some shops deal solely in
tables and chairs of the European
fashion.
N. Oo11As calls attention to q COM
munication published in Les Nondes
February 3, 1870, in which he assumes
that the Cape Of Good Hope was ON
the border Of diamond field extending
toward the E. n. E. Ten months later
the news reached Europe of the discov.
cry of the rich mines in that region.
Iron ore has been found in the
Hazarebaugh district, in India, which
is said to contain eighty per cent. of
pure metal, together with slight aa-
mixture of manganese. There Is said
to be 500 square miles of this ore in
the Diamonds coal fields. Under the
deposit there is layer, supposed to be
about twenty feet thick, Of the finest
coal in India.
THE properties of nitro-glycerine
have recently been Thoroughly investl.
gated by Champion, of Paris, who ar
rives at the following results: Nitro.
glyoerine Is soluble in ether and alco
hol, and entirely insoluble in water.
When pure, it is rot liable to spon.
taneous decomposition, and when ex.
posed t. cold Of 90 g. it freezes into q
crystalline mass. It boils but does not
explode at 1870 c., volatilizes rapidly
at 2ooe c., and explodes violently At
The upholsterers in India often ap
ply solution OF sulphate of copper to
floor previous to laying q mat or car
pet, as protection against moths.
For er-coverings q solution Of corro-
sive sublimate in colorless alcohol ID
frequently used with good effect.
DE-. CHARLES F. CHANDLER states
that not only typhoid fever is depend
ent in q great measure to insufficient
drainage, but, also that "cholera,
though it does not originate from pol
luted water, il disseminated chiefly by
the aid of wells, and other impure
water supplies
A TUNNEL about six hundred yards
long has been commenced near Geneva,
to utilize the fall of the Rhone at
Benegarke. About third of the water
of the river will be diverted into the
valley of the Valseriane, yielding ten
thousand horse power, as much az that
of Lowell.
M. @. meme mixes silicate of soda.
in rather concentrated state, with Zinc
white, forming an excellent resisting
paint for outdoor work, on wood.
meta, stone, paper, roofing, felt, &c.
Combustible substances, when coated
with the mixture, are rendered unin-
fammable.
TIE black crust which forms upon
lamp wicks should Re removed before
relighting, for purposes of economy as
well a. of neatness. IF it is allowed to
remain, q larger portion of the oil is
evaporated, without combustion, and
consequently wasted, than if the lamp
is properly trimmed.
Dr. DuDaEoN claims that the chanxe
of the eye from distant to near vision
is not effected by increasing the anteri
or convexlty OF the crystalline lens, but
but by q slight rotation of the lens
from without inward, by which the
focus is shortened so a. to throw the
image of . near object accurately on
the retina.
TIE occasional explosions of coal oil
lamps from attempts to extinguish
them by blowing down the chimney
give value to the following suggestions:
Give . sharp, but rather prolonged
puff, at right angles with the tor of
the chimney. The draft thus produced
draws the flame away from the wick,
and the lamp goes out.
Mn. KEITH JOHNSON, in his summary
OF the results achieved by the Austrian
expedition for the examination of the
sea between Spitzenbergen and Nova
Zemiia, states that the open sea navi-
gated in 1871 below the the seventy
eighth parallel is mere than five hun.
dred miles in extent longitudiually, aud
of indefinite breadth.
AMONG the beneficial effects that have
been attributed to the blue and violet
rays, their influence on the sight is of
considerable importance. It is said
that If the ground glass globes for
lamps or gas burners are tinted blue,
the light is peculiarly grateful to the
eye. A lining or covering of blue It's
sue paper may give the desired tint.
The new process of coating sheet iron
with copper or brass bids fair to sup
plant the use of timed or galvanized
iron to q considerable extent. The
plates may be annealed without injury
during the process of stamping, and
they can be FURNISHED, planished, OF
spun, and thus brought to any required
degree of finish, initiating sheet brass
! or copper at greatly reduced price.