The Middlebury register and Addison County journal. [volume] (Middlebury, Vt.) 1883-1885, 1885-04-24
SCIENTIFIC AND INDUSTRIAL.

Two French scientists have investi-
gated, by means of the spectroscope, the
light emttee>oy the FREELY. They find
it to consist of red, yellow, green and a
little blue light.
In relation to the ventilating of bed
rooms, Horace Mann used to say that,
since the atmosphere was forty miles
deep all around the globe. it was q use
less economy to breathe it more than
once.
A Wisconsin lumberman has invented
sled with hollow shoes that will make
ice roads. Steam and hot water are
forced through perforations in the shoes
so that the snow may be softencd, packed
and frozen into cutters that will bear
the runners of the heavy logging sleds.
The very remarkable statement is made
in the Medical Times that DR.. Fleischl,
of Vienna, has discovered that the by
drochlorate of cocaine, administered
hypodermically in doses of from one
twelfth to one-fourth of a grain, will cure
morphinism, alcoholism and similar
habits within ten days.
A floor of paper has been made in
new rink in indianapolis. Straw boards
are pasted and pressed together by n.y.
draulic press, and when seasoned they
are sawed up into flooring the edge of
the paper forming the floor, which is
without joints. When sand papered it
becomes smooth as ice, and is noiseless
M. Fordoz gives in Cosmos a very
simple and useful method of detecting
lead in the timing of culinary utensils.
The vessel being carefully cleaned to re-
move grease, a drop of nitric acid is APP
piled to any part, and gentle heat is
used to dry the spot. A drop of solution
of iodidc of potassium is applied to the
spot, and if lead be present yellow
iodide of lead is formed
To send and to receive kilograms on
train moving at the rate Of 30 miles an
hour, with the same facility as in any
telegraph office, says Industrial Americd,
will be admitted to be a noteworthy feat ;
but that it has been successfully accom-.
plished admits of not possible doubt.
AS in most inventions of merit, the
means employed are quite simple, and
the invention acts upon principles that
have long been known and applied.
DR.. j. NJ. Andcrs has reached the con-
clusion that only Towering plants. grown
III well-llghted places. generate ozone I;
and that the most odorous flowers pro-
duce the greatest quantity. The ozone
attacks the organic matter of the air, and
by oxidation renders it inert; and DR.,
Anders does not doubt that Towering
plants in clear weather give off enough
of this natural purifying agent to be of
hygienic value indoors. Foliage plants,
although yielding no ozone may be of
advantage in contributing to the mainte-
nance OF healthful degree of humidity
in the atmosphere of rooms.
Statistics collected by tile American
Ornithologists' union show that great
numbers of birds are destroyed by flying
against the lighthouses of Cuba. At
Baredon Grande. more than 100 birds
were found one morning; in one night
last October 27S were killed by flying
against the lighthouse at Cardenas; and
at the San Antonio lighthouse more than
500 are sometimes picked up after a sin
gle nights destruction. Thus is con-
tirmed the view expressed by Prof. Spen-
Ger F. Baird, twenty years ago, that
every autumn a great bird wave sweeps
over from Florida to Cuba.