The Opelousas courier., 1901-04-13
SCIENTIFIC AND INDUSTRIAL.

Nearly every class Of clouds attainl
a loftier altitude between the hours of
4 and s p. m. than at any other part
Of the day. whereas between noon and
o'clock they fall a trife below the
average.
German surgeons have discovered
that the delicate membrane which Gov
ers the contents of an egg will answer
as we'll as bits of skin from a human
being to start the healing of open
wounds which would not otherwise
heal. The discovery has already been
successfully tested.
Drs. Sambon and Low have returned
to England, after spending the sum-
mer In the mosquito-proof hut In the
Roman Campagna. They are in excel
lent health, though the past summer In
Italy is seid to have been exception
| ally malarious. For example, fifteen
or sixteen police agents were sent to
Ostia, and though they remained only
a night in the place, they all developed
fever. >
At the Zeiss Optical Works In Jena
there has recently been produced an
artificial spectrum, which may be used
as a test in orthochromatic photo
graphy. 1t consists Of four colored
nIo No 1~Sepor -AfaH {A0nShow Farm a
thick plate. There Is an obtuse-angled
yellow prism, which has on one side a
~right-angled purple prism, and on the
other a blue rhomboidal prism. Next
to this last prism Is a purple prism of
rectangular form. The colors selected
for the prisms correspond with the
ideal colors for trichromatic purposes,
and. by suitable combination, any de-
sired shade can be produced.
The electrical industries of Germany
are pleased to learn that recent explo-
rations Of the Uluguru Mountains In
German East Africa have revealed the
presence Of deposits Of mica. These
beds are situated west Of Dar-es-Sa-
laam, and contain mica-sheets particu-
larly well adapted for electrical pur-
poses. The sheets are solid, split even
and are able to endure the high cleo
trio tensions, making the substance
useful for insulation. This mica is
said to compare favorably with that
imported from India, Canada and the
United States, and there should be
strong demand for the material. There
are yet difficulties in the way of trans
portation, which. however, will be
overcome when the Central Railroad
approaches the Uluguru Mountains.
In England there is apprehension
that the coal supply of the country is
giving out, and that before many years
pass the increasing price Of coal. ow-
ing to the greater depths at which it
must be mined, will seriously affect
many industries. In Scotland there
are many fine water powers, but gen.
orally in remote and comparatively In
accessible neighborhoods. The ability
of electrical systems of power trans
mission to make the power Of these
c%ataracts available has been well DEM
onstrated, and there is now a strong
movement toward the organization Of
companies for their exploitation. So
far the promoters Of the various enter
prises have found themselves some
what hampered by the unsatisfactory
condition Of legislation regarding en-
terprises of this character In Great
Britain, and also by a sentimental feel
ing for the natural beauties Of the
Highlands and lake regions which, 1t
is popularity believed, will disappear
when the water falls are all turning
water wheels. When the pressure Of
competition from countries having
cheaper fuel is felt, 1t is likely that
these objections will largely disappear.
and that Scotland will become the
scene of a large manufacturing indus
try using electric power from Its lochs
and streams.