The daily Cairo bulletin. (Cairo, Ill.) 1878-1???, 1881-06-01
SCIENTIFIC AND USEFUL.

A curious fact has been noted by
Professor Won Tieghem. The cells ia
the roots Of an apple tree underwent al
coholic fermentation when the soil was
very damp. The tree then presented q
very sickly appearance.
Mr., G. Phillips Bevan estimates the
grand total Of gold produced during
the historic ages TO be E3,5l7. 093, 800,
and that OF silver, f2, 1926, 250, 900, MAX
ing the produce Of both the precious
metals to be worth f6, 343, 343, 500.
According to Mr.. A. Renvuard, the
water in which hemp has been stepped
produces no evil effects on the health of
a district when such water is allowed TO
How into running water, but always de-
stroys the fish and some varieties of
vegetable growth.
Some far-reaching data are looked
for regarding deep-sea fisheries when
the steamship for which Sl03,000 had
lately been appropriated by Congress
completes the work for which she is to
be specially constructed under the SUI
peryision of Prof. Baird.
There is in Edinburgh, Scotland,
Sunday Science School, attended, from
November to July of last year, by an
average OF sixty pupils out Of an en-
rolled number OF ninety-two artisan
and other youths who could not, owing
to prolonged business hours, attend
evening classes on week days.
A young German who was witness
ing the shoeing of horse was struck
by small particle Of iron, which PEN
etrated the pupil of his eye and buried
itself deep in the body of the organ.
In an eye hospital at Weisbaden the
extraordinary operation Of withdraw
ing the iron by means of magnet was
recently performed with entire success.
In recent letter on Goal Gas" Pro-
fessor Renzen cited a curious instance
OF the deodorizing of illuminating gas.
In Dresden a quantity Of gas escaped
from q pipe outside of dwelling and
passed through the earth into the house
with its odor entirely gone. 1t was
breathed unconsciousIy, and several
deaths occurred in consequence.
As the result Of his personal observa-
tons, Nj. Carlet states that the walking
OF insects may be represented by that
OF three men in Indian file, the fore
most and hindmost of whom keep step
with each other, while the middle one
walks in the alternate step. The walk.
ing OF arachnids can be represented by
four men in file, the even numbered
ones walking in one step, while the odd
numbered ones walk in the alternate
steps.
A writer in the JeWiM World points
out that, contrary to the received idea,
the elder rabbins of the Talmud taught
that the world was round. This is
shown by passage in which, in dis
cussing idolatry, the figures holding in
the hand baton, a bird, or globe
were prohibited, because the baton
symbolizes the dominion of the world,
the bird that the world lies beneath
it, and the globe is forbidden because
1t resembles the form of the world itself.
Mr.. Plimsoll suggests that fre-damp
should be withdrawn from mines by
pipes, Just as the water is pumped up
from the stump. He would make a
stump" for gas in the highest part of
the roof, and then allow the gas TO es-
cape from the workings up a vertical
tube to the stump, whence 1t would be
pumped 70 the surface, and employed
for lighting the village. Mr.. Plimsoll
thinks that such plan would give alb
solute and immediate control TO the
managers OF a pit over any gases which
might be lurking in the recesses Of the
mine; and he suggests that if his rem
edy is found useless some scientific or
| philanthropic body should offer pre-
MUM Of go, 600 for the discovery Of
means of entirely preventing coal-mine
explosions.