Evening capital. (Annapolis, Md.) 1884-1910, 1890-10-06
sClENrrrIo AND USEFUL.

Griddle cakes ara baked by electricity
An ingenious device which has been
successfully operated in Chicago is a
window cleaner operated by electricity.
Charts have been prepared showing
that the eye has 729 distinct expressions,
conveying as many different shades OF
meaning
Artificial lr Jsk is q recent chemical
achievement. process for its production
having recently been patented in Ger.
many.
Ia Russia the fields are being cultivated
by electrical appliances, the gain so far
being apparent more in time saved than
in increase of crops.
Sea air has been found to have a thick
ening effect upon the leaves of plants
and trees. Moreover, plants grown in
salted soil produce thicker leaves
A patent was issued in Washington
recently for steel fence post. 1t is to
be made of steel tn ing, seven feet high,
with neat cap and with bands to hold
the barbed wire. 1t is said that these
posts can befurnished complete for plac-
ing in position for "a cents each.
1t is now announced that DR.. Koch,
the distinguished German scientist, has
discovered positive method of averting
phthisis and also of arresting the disease
when already in progress. 1t is the in
oeulation method, such as Jenner applied
to smalIp pox and Pasteur to hydrophoAia.
The tomato is having a great run in
London as a medicinal agent, especially
for hilliouness. One correspondent as
sures leading journal that he found in
the tomato specific for chronic throat
trouble, and if there is any virtue in the
vegetable as a hair renewer and corn
cure the extensive experimentation now
going on viii surely bring iti out
Late Investigations, have determined
that the majority of deep sea deprcssions
come from other than volcanic origin,
and that the coldest waters of the ocean
stand in the deep troughs, instead of
running, as was foEmerly thought to be
the case.
A new use has been thought out for
the phonograph, which will save the ex-
pense of a burglar alarm. A fierce bull
dog is made to bark into it. 1t is then
attached to the inside of the door of the
house to be protected, and but little
machinery is needed to produce the most
fearful alarm as soon as the door is
meddled with.
An English engineer proposes making
doubled shell boilers, maintaining pres
sure between them By these means he
calculates that much higher pressure
can be carried than is possible even with
the coil boilers already in use.
a watch for blind people has been in
vented in Switzerland In the middle
of every figure is a small peg, which
drors when the hour hand reaches the
figure. Tile owner feels that the peg is
down, and counts back to 12 TO deter
mine the hour.
DIR. c. G. Curlier says, in the Medical
Record that water is easily sterilized by
keeping it at or near the boiling point
for 10 minutes. Five minutes heat is
sufficient to destroy all harmful micro
organisms. Still less time suffices to de-
ssroy the disease producing varieties
which are recognized as liable to occur
in water. Thus merely raising to the
boiling point clear water containing
the micro-organisms of malarial dis
orders, typhoid. cholera, diphtheria, or
of suppurative processes, and allowing it
to gradually cool, insures the destruction
of these germs.