The Indiana State sentinel. [volume] (Indianapolis) 1868-1895, 1883-04-25
CURIOUS, USEFUL AND sCIESrIFIc

By the use of an independent cut of
valve on engines Mr.. w. b. Lo Van asserts
that the speed of an engine can be increased
to seventy or eighty miles an hour.
It is estimated that in the two Carolinss,
Georgia and Louisiana total population
of about 2O0. 600 people, white and colored,
are dependent upon the cultivation Of rice.
The Executive Committee of tho Inter
national Fisheries Exhibition viii light
their galleries with electricity. Tho me-
tive power required will be nearly 700 horse
power.
A small hydrogen gas balloon, with cs-
pacity of about two gallons, was liberated
st Bercy and made lis way TO Gra1no, in
Poland, having travelled more than 2 000
miles. This is the longest air journey Oh
record for so small an object.
To find The speed OF a coun.erahaft when
the revolutions of the main shaft and sizes
OF pulleys are known, multiply revolutions
OF main shaft By the diameter Of the pulley
on it in inches and divide Into the driven
pulley on counter shaft. The quotieDt il
the number of revolutions.
The strength Of iron in boilers Is not much
affected By the working temperatures up "a
considerable over 4OOo, nor by low iempera.
lures down to the freezing point. But when
the temperature Of the plates, through the
absence OF water or any other cause, rises
much above 5G00, then q change commences
Above 750' the tenacity diminishes very
rapidly, and when the plates become red
hot they have lost fully half Of their usual
strength.
The oldest and largest wine-vault in Lon
don employs 8 man who is said to be the
most expert judge Of beverages in the world
He is fond Of exhibiting his skill for the
amusement of visitors. He bhndfolds him.
self and four different kinds of sherry are
poured into the Same glass. He takes 9
mouthful and declares the component parts
of the mixture, usually without q mistake
Then he experiments with port, and is won
derfully successful. He identifies numerous
champsgnes, even to the year OF vintage
When glass of an American brand was
submitted, howe7e-, he hesltsted, never hav-
ing tasted it before, 'but said it was pretty
good wine, with more brandy in it than il
ought to have, and probably made from
some Northern-grown grape. A sample o.
applejack completely nonpluised him.
| It was found By NJ. Burt that aneathesis
could be produced with mixture Of nitric
protoxide (S5 vol and oxygen 10 VOL, i
the application were made in q metallic en-.
closure with certain pressure above tn
atmospheric. M. de 81. Martin hes OBJ
tanned the same effect at ordinary pressure
By adding small quantity of chloroforn
to the mixture &c or drains per hectoll,er)
The physiological effects seem 20 be inter
medisle between those of nitric protOxidC
and of chloroform. An@stbesia ia very
rapidly produced, and the period of excitS
ton which occurs with chloroform i,
avoided. The superiority of nitric pro
toxide is taken advantage Of, but without
pressure being necessary. The protoxI4t
alone, it may be mentioned, produces
anse sthesis rapidly, bat also gradually
ssphyxla.
Recent investigations show that the
blocd-vessels of q human being capable OF
performing his daily svocstions msy con,
tain from 20, 600 10 10000 minute embryo
nemstoid worms. A physician at Calcutts
demonstrated this with regard to persons
in that climate. Numbers Of individuals 90
affected suffer from chyluris, or elephau-
tiasi., in one or other of its forms; but this
is by no means universally the case. Pc
searches have also revealed the curious fac.
| that these teemiRg multitudes of nematoids
Turk in some unknown recesses Of the vas
culsr system during the daytime, and tina
only as night approaches do they wanda
at large through the vessels generalll
Experts say that single drop of bloc
taken from prick of the finger at NIL
night in person SO affected may conta
as many as 200 embryo nematoids, whil,.
many drops similarly obtained at midday
will not reveal single worm.