Mineral Point tribune. (Mineral Point, Wis.) 1869-1938, 1876-01-19
MECHANICAL AND SCIENTIFIC.


The French Government has sent DR..
Durand Fardel to China to study the sub
ject of contagious diseases and obtain
data for discussing the question OF quar-
antne.
The remarkable discovery Of boil
ing lake in the Island of Dominica has ex-
cited much scientific interest, and inves-
LEGATIONS Of the phenomenon are to be
made by biologists. 1t appears that a
company exploring the steep and forest
covered mountain behind the town OF
Rosseau came upon this boiling lake about
$500 feet above the sea Level, and two
miles in circumference. On the wind
clearing away for moment the clouds OF
sulphurous steam with which the lake
was covered a mound of water was seen
ten feet higher than the general level OF
the surface, and caused by cbullition.
The margin of the lake consists of beds
of sulphur, and its Overlooking found
exit by a waterfall OF great height.
"A valuable process tor removing the
shydrochloric acid nuisance from the air
and rivers is described in the Chemical
Nens I'm the apparatus thus employed
the chloride Of lime produced contains IS
per cent. of available chlorine and the
of the finished product The chlorine re-
suliing from this process Is so diluted
with nitrogen and air that, for perfect
absorption, the surface covered with lime
is six times larger than in the ordinary
chloride of lime works. The Introduction
Of the process is rendered costly by the
extensive chambers required; but, on the
other hand, the advantages which present
LOO hut l,n of 10
il slight, the consumption of fuel mod
crate, and manganese Is entirely dispensed
with.
M Pupka, Of Vienna, has published
an account OF his cxperiments in lining
steam boilers with sheets of copper in
order to hinder incrustation He states
That Of the three plates which formed the
bottom OF locomotive boiler the two at
the ends were covered with a sheet of cop
per 04 inch in thickness, the middle
one being LEFT bare and the machine was
used steadily for two years, and in dis
tricts where the water is of excessively
bad quality On removing the tubes a
layer OF incrustation four inches thick
was found on the iron surface, while
deposit varying irsnn only .0S to IL
inch thick appeared on tho copper. The
iron also was found corroded in many
places 10 a depth of .02 inch, but the
. copper had remained perfectly clean and
bright NJ. Pupka states that the texture
ct the incrustation showed grains OF
larger size on the iron than on the cop
per.
"A little controversy regarding the
relative strength OF the lion and tiger has
been sustained among certain correspond
.cpts 10 Nature. The latest writer-Mr
Haughton of Trinity College, Dublin
% declares that every person wei acquainted
with both animals will conccdc that the
tiger Is the stronger. Mr. llaughton
states that the strength OF the lion in the
iore-limhs is only 900 per cent OF that OF
the tiger, and that the strength of the
hind legs is only go per cent, 81 that ot
tie tiger may add" he says, that
five men can easily hold down q lion,
while il requires nine men to control IA
tiger. Martial also states that the tiger
always killed The lions in the amphithealer
The lion Is in truth pretentious mum
bug, and owes his reputation to his i'm
posing name, and he will run away like a
whipped cur under circumstances in
which the tiger will boldly attack and
kill ="