Evening capital. (Annapolis, Md.) 1884-1910, 1891-06-11

Freight is nnloaded by electricity.
Electricity is to send a train $50 miles
an hour.
ingenious device for discovering comets.
based upon the principle of selonium cell.
A new substitute for ivory, called lac
tite, has been invented by Norwegian.
1t is made from SKINNED milk, and will
take any coloring.
A Newcastle inventor has applied for q
patent TO construct cycle wheels without
spokes, using instead two disks of very
thin steel, riveted together at the rims
and axle holes.
The works of watches are now plated
with palladium, which is a whittier,
lighter, and more fusible metal than
platinum. About one-seventeenth of
grain of palladium will, by electrical dep
osition, coat the works of an ordinary
watch.
A new pianoforte keyboard having six
rows of keys has recently been exhibited
formed by six keys in two contiguous
rows. All the keys are on the same level,
and each note is separated from the next
by an interval of two semitones.
1t has been calculated that the electro
motive force of bolt of lightning is
about 100000 volts, the current about
1900, 900 amperes, and the time to be
about 1-20,0 part of a second. In such
bolt there is an energy of 2,450, ,000, 900
watts, or 1924, 1S2 horse power.-( Popu-
lar Science News.
The Washburn Moen Company at
Worcester, Mass, is making a series OF
experiments which promise to transform
the rod and wire business. Copper is now
used altogether IN rods and wire where
great strength and resistance to tension
are required. Steel lacks this tenacity.
1t is stated, however, that the company's
experts have discovered a process by
which steel can be tempered so as to pos.
sess this necessary tenacity.
BY careful experiments made at the
United States Mint, says The Iron Iadsts-
try Gazette, it has been shown that $5
are lost by abrasion every time 81 600, 900
in gold coin are handled. The expert
ments were conducted with bags contain
ing $1,000 each, and it was shown that
the mere lifting of the 200 bags making
up 81 ,000, 900 to truck to be removed to
another vault, resulted in the loss stated,
and that their transfer from the truck
again made a second similar loss.
AT a recent meeting of the Linneau So
ciety at London Mr.. Christy exhibited
and described some specimens of honey
from different countries. "Arbutus
honey" from Turkey, is said to produce
great drowsiness and sleep; Eucalyptus
honey" from Mount Barker, Adelaide,
Australia, is said to possess valuable ther-
apeutic properties, and wool honey, :"
from. the Euphrates, which is really
honey dew collected from the leaves of
oaks and deposited by aphides.
Some cheap and simple process by
which wood, especially sawdust, can be
made incombustible is desired by corre-
spondent of the Bulletin at San Bernar-
dino. The dipping in solution of tung-
state of soda will render sawdust incom-
bustible, although the process may be too
expensive to be practicable. 1t is re-
ported that all the laundry of the ladies
of Queen Victorias household is submit
ted to this treatment. and some actresses,
who fear their clothing may be ignited
from the footlights, also take this precau.
ton with their underclothing.
Professor G. w. johnson, in his "Chem-
istry of the World, explains the charac-
ter of the acids in many of the food arti-
cles used by man. Maiic acid predomi-
mates in the stems of rhubarb or "pie
plant" the acid in oranges, lemons, etc. i.
is citric; the acid in plums, apples, and
pears is malic; the acid in gooseberries
and currants is a combination of malic
and citric; the acid in grapes is combi-
nation of malic and tartaric. Some of the
vegetables used though not looked upon
as containing acids do, nevertheless, con-
tain large amounts, as asparagus and Gu
cumbers, for instance. The acid in the
former is asparic, while that of the latter
is fungin. This last named acid is one
of the most injurious taken into the
human stomach as food, which accounts
for the common unwholesomeness of the
cucumber.