The Republican. [volume] (Oakland, Md.) 1877-current, 1888-05-26
SCIENCE AND INDUSTRY.

There are in all seven species OF
parasites known to prey on the Hessian
fly. Miss Ormerod, an English woman,
famous for her insect knowledge, has
Matched them out and classified them.
DR. Henocque, of Paris. has invent
ed new spectroscope for investigating
the changes in the blood. 1t is expect
ed to prove of Importance in studying
nutrition.
1t is estimated that over 1000
pianos are in use in the city of Brook
Ign alone. In the opinion of some peo-
pie the time is fast approaching when a
piano will become a necessity instead
of luxury.
Prof w. Mattieu Williams offers as
better explanation than the old one
of the zigzag course of lightning that,
owing to variations of moisture, the
conducting power of different portions
air is variable, and the electric dis
charge follows the course of least resist
ance.
There are 337 blast furnaces in
operation in the United States, produc-
ing 1899 tons per week, and 313
idle, with weekly capacity of 122,042
tons. The anthracite capacity has in
creased from SO, 602 tons weekly y year
ago to IS, 27S now.-Public Opinion.
The bacillus of cancer is hard to
find, and DR.. Senger reports to the
Berlin Clinical Society that he has been
unable to verify observations claimed
to have revealed the organism. Cancer
appears to be peculiar to man, as it has
never been inoculated in the lower ami
mails
"A new kind of glass has been in
vented in Sweden which is asserted to
possess wonderful microscopic power.
While the highest power of an old
fashioned microscopic lens reveals only
the 1-400. 0O0th part of an inch, this new
glass wieE enable us to distinguish
1904, 700, 000th part of an inch.
Picture frames are now made of
paper and colored like walnut, and are
so perfect that no one could detect them
without cutting them. Paper pulp,
glue, linseed oil and carbonate of lime
or whiting are mixed together and
heated into thick cream, which, on
being allowed to cool, is run into molds
and hardened.
The trade in birds for women s
hats was so enormous last year that Il
single London dealer admitted that he
sold two millions of small birds of every
kind and color. At one auction in one
week, there were sold 5000 birds of
paradise, 5000 Impeyan pheasants,
100000 humming birds, and other
birds from North and South America,
and $50. 900 feathered skins from India
According to General lilo, the
continents average 8 deg. C. (54 deg.
F.) colder than the oceans between the
latitudes of 80 deg. N. and so deg S.
The New Continent is deg. colder
than the Old; and the Atlantic 26 deg
colder than the Pacific The northern
hemisphere contains IA per cent. of the
cold regions, 35 per cent of the tenn
perate and 81 per cent. of the hot
AN automatic safety engine"
burning kerosene oil, is said to be all
that its name implies. The several
parts are so well designed that hot
bearing has never been known as yet.
The fuel is kerosene oil, at the exceed
ingly low fire test of ITO to lis de,
grees, which makes a cheaper fuel than
hard coal at $3.50 per ton. These
engines are adapted to n great variety
of work, from running sewing ma
chimes to driving elevators. They will
never fail where fair usage is granted
them.
-Celluloid has recently been used as
a substitute for copper in sheathing the
hulls of vessels, and has been found tc
answer the purpose admirably. Plate;
of this substance have been applied tC
number of vessels and allowed to re.
main six months. At the end of that
time the parts of the hull left uncovered
were found to present abundant col
lections of marine negotiations, while
the celluloid was intact and free from
any such vegetable masses. 1t is sale
that it can be applied to the hull il
very thin plates and yet answer all de
mands for solidity, resistance to chem
ical action, etc.-Iron Age.
TILE pan Def NOG