Morris tribune., 1884-07-30
SCIENTIFIC MISCELLANY.

The fact that steam pressure guages
for boilers are sometimes unreliable
has led Sig G.. Clodig to propose the
use of thermometers to replace or ac-
company them, as the temperature
of the water gives an accurate indi-
cation of the pressure OF the steam.
Naturalists have long known of
carnivorous plants that entrap in
sects. 1t is now stated, on the au-
thority of Prof Braid, that Il bladder
wort which has hitherto been care
fully introduced into the Govern
ment's carp ponds as food for the fish
has very curiously, turned out to be
tish-eating plant devouring the very
animals which were expected to feed
upon it.
For many years Prof. II. w. Vogel
has conducted researches on means
of photographing colored objects in
their natural shades. 1t is known
generally that certain colors-such as
blue, green and red ivevery unnatural
pictures, but Prof. Vogel has at last
succeeded in obtaining photographs
satisfactorily showing colored objects
without, of course, reproducing the
cOlors themselves.
Of a supposed risk attending the
use of mackerel, like all other fish. are
more or less infected by parasites, one
of which, Il small thread-WOrm is Of
ten so abundant as to be conspicuous
when the fish is opened. But it is
not true that there is any reason to
believe that this thread-WOrm would
be injurious to Il man even if he
swallowed it uncoOked and alive, and
to speak of it as q possible cholera is
sheer nonsense.
A new and brilliant ring around
the planet Saturn has been discovered
| by two French astronomers, Messrs.
Paul Henry and Prosper Henry, who
express surprise that it has not been iob
served before. 1t is suggested that
the oversight confirms the suspicion
that Saturn's rings are in u state OF
constant change, as it appears most
probable that the reason why the
| new ring was not earlier seen is that
it was formerly much less distinct
than now.
A project for lessening the duration
! of draughts has been submitted to the
! Australian Minister for Water Supply
| 1t is proposed, on the appearance OF
clouds during q dry season, to senC
into the air q balloon carrying beneath
it dynamite charge which is to be
| fired by wire reaching to the earth
The idea of producing conclusions
for causing the vapor in the air tc
| cOndense as rain is not new one
and is not probable that it will prove
an economical plan for getting water
| Cases of remarkable intimacy be
tween animals of different species are
not rare, although they have only re
Gently attracted particular attention
| A writer in China mentions the shoot
| ing of snake under conditions which
make it appear that the creature wa
crossing a river on back OF q tOrtols'
and this circumstance gives conn
color 2f probability to an assertion
often made among the Chinese tina
the greatest affection exist between
these two animals.
:sMountain Sickness is not an in
eyitable consequence of travelling II
| elevated places. With two guide
MI. w. W. Graham has climed ITO
higher than any other human beings
reaching a point in the Himalaya
| %, 700 feet above sea-level. Of the eX
perience of his party, MI. Graham
| says, in an account given to the Roya
Geographical Society of London
'sNeither in this nor in any other as
cent did we feel any Inconvenience
in breathing other than the ordinar,
inseparable from any muscular excl
ton. Nausea, bleeding at the nose
temporary loss Of sight and hearing
were CONSPICUOUS only by their al
sence. and the only organ preceptibl
affected was the heart, whose beating
became very preceptible, quite aud
BILE, while the pace was decidedly IL
creased.'