The Cheyenne daily leader. [volume] (Cheyenne, Wyo.) 1870-1884, 1881-07-29
SCIENTIFIC AND + F

Iron vessels of large tonnage are dis
placing small wooden crafts on our
great inland fresh waters as well as oil
the ocean.
a photograph Of an improved con
struction is to be tried nj Paris foi
teaching pupils the pronunciation Of diff
licult words In foreign languages
Physicians in the mining regions sey
the presence of diphthcria is directly
traceable TO oleomargarinc, adulteraie
molnsses. sugar. etc, which are largelj
used In that section.
All ordinary fruit acids are said Il
act upon Tin. and one case Is reported
in which persons were made violcDtli
sick from eating fruit preserved in IT,
cans, no foreign substance except tit
being found Ia the fruit.
The objcct-glass for the Lick o ser
vatory telescope in California Is 10 b
three feet in diameter. aud if sue e.
ful. will be the most powerful ipsira
ment of the kind e.cr made. A'ni
three years will be required TO fins I
tie telescope.
Sir Wyvile Thompson has cslin ste :
that the pressure upon q mans bolf a
a depth of II. 900 feet beneath the scr.
face OF the sea would be equal to ~
weight of twenty locomotive !. each " a.
a good train loaded with pig iron.
It is said that Shring a hailstorm IN
Geneva on January 10, Prof. Colladoll
observed that the hailstones repel,e,l
each other as they fell. and that aitcl
lying quiet for n moment or two on III,
ground. bounded about like the electric
hail experiment of Newton with pith.
balls.
Excavations commenced a short dis
lance from the walls of Pompeii. witt,
a view Of a~scertaining the nature OF
the surroundings Of tile city have led
to the discovery. within an area OF .
few square yards, Of thirty skeletons.
ten Of which wero huddled together in
n o Of Q small suburban villa.
Bracelets. necklaces. earrings and other
objects were found upon the bones.
According TO the stories Of M. He.
bert, tho storms which reach tho Euro
pean coast from America originate for
the most part in Mexico, Central Amer.
lea and tho northern parts Of South
America; but they do not generally
strike the Atlantic until after they have
.traversed q more or less extended part
of the North American Continent. The
storms which originate in the United
States reach Greenland, or pass the
neighborhood Of Iceland or the FARGO
Islands. too far away to affect Europe.
About the beginning Of August the
seventh biennial International Medical
Congress will be held in London. The
last meeting took place in Amsterdam
in 1879. OF the 1000 invitations lately
issued. it is expected that at least 2,0Oc
will be accepted and the papers to be
read are likely to exercise a very con-
siderable influence on tho various
branches OF medical science and prac-'
tice. An exhibition Of the Park Museum
of Hygiene, comprising everything oil.
for the prevention, dctect.o on. i.
cure and alienation Of diseases, will be
open Mt South Kensington from July 1G
August IS.
A curious experiment in heat is per-
formed with an apparatus devised by
DR.. Grassi. The apparatus consists OF
three concentric vessels separated by
annular spaces Of about three-fourthsi
Of an inch. Tho outer space is filled.
with oil, and the inner with water. The
is heated to a point about 2l2 do
grces Fahrenheit, when the wate~ be-
gins to boil. Oil heated to 800 degrees
Is then introduced into the central YES
sci, and falls rapidly to a temperature
about that of the boiling water. DIR.
.rassi finds that this central oil cools
the more quickly the greater the heat
Of the outer ring Of ola result SEEM
ingly very ~paradoxical.