The Indianapolis journal. [volume] (Indianapolis [Ind.]) 1867-1904, 1897-08-22

mentions that the inhabitants OF a malarial
locality In the government OF Kharkoo have
In recent years used powdered crabs with
great success in feyers. and that this pow
der has been adopted in preference to quiz
nlne A teaspoonfu is generally sufficient
20 cure the intermittent fever, second
dose being required only in obstinate cases.
Inc powder is prepared by pouring ordi-
nary whisky on live crabs until they are
put TO sleep. when they are put on a bread
pan IN q hot oven, thoroughly dried, pull
Verized, and passed through a fine seive.
IN sextant observations On shipboard 1t is
offen difficult TO make measurements from
the horizon, and various attempts have
been made to substitute some mechanical
or other means of determining the horizon
tai or vertical, A novel plan-claimed to
nave been put to practical use on land and
sea-haS been suggested in France bv Rear
Admiral F'leuriais. 1t consists in adding to
the ordinary Sextant a horizontal gyro-
scope, which is placed in front of the tele-
scope and behind the small mirror and con-
tains in its upper part two small plano
convex lenses, placed at a distance apart
equal TO their focal length. On the plane
faces of the lenses are engraved two lines
parallel 10 the equator of the gyroscope
The gyroscope is rotated eighty to one hum
dred turns second, and the horizontal is
obtained by observing the position of the
figures described by these lines as the
lenses revolVe.
The toposcope is a novel apparatus used
IN Vienna for locating fires. 1t consists of
a good telescope solidly attached to a grad
uated horizontal and vertical scales, which
always give the same numbers when the
Instrument is focused unon the same object.
An index of the whole city having been
made 1t Is easy TO determine the exact spot
at which the telescope is pointed. The APP
paratus must necessarily be placed in an
elevated position commanding an unob-
structed view of the area to be watched
and in this case the tower of st. Stephens
Cathedral. which is over five hundred feet
high, is used. giving-with the favorable
atmospherical conditions that prevail-com-
plete oversight of the entire city. When a
fire is seen, a few seconds suffice for point-
ing the telescope toward 1t and looking I'D
on the index the numbers read from tho
scales. The central station is then sig
nailed, and it is often possible to give the
exact house and number, while the usual
box signals indicate only box that may
be several blocks from the fire.
The diamonds of the Kimberly diamond
pipes in the theory of Professor William
Crookes, have crystallized out of molten
iron containing dissolved carbon, and at
sufficient depth IN the earth to give great
pressure Water reaching the iron gener-
ated gas that bored out the pipes. and at
the subsistence of the great rush these were
hlled with water-borne magma in which
rocks, minerals, iron oxide, shale, petro-
leum and diamonds are churned together
In veritable witchs cauldron. 1T may be-
Professor CrookeS concludes, that each of
these volcanic pipes is the vent for its own
special laboratory-a laboratory buried at
vastly greater depths than we have reached
or Gre likely to reach-where the tempera-
ture is comparable with that of the cleo
trio furnace; where the pressure is fiercer
than in our puny laboratories, and the
melting point higher; where no oxygen is
pr esent, and where masses of carbon-satu-
rated iron have taken centuries. perhaps
thousands of years, to cool to the soldify-
ing point. Such being the conditions, the
wonder is, not that diamonds are found as
big ones fist, but that they are not
found as big as ones head.