Savannah morning news. [volume] (Savannah) 1868-1887, 1885-09-21
BITS OF SCIENCE.

| HeaJ DOgB cover ABOUT One-S0FenJn Of
| the surface of Ireland. Some Of these
boys are sup posed to represent 10000
years growth.
NJ. WITT states, as the result OF observa-
lions he has been making for some time
| on atmospheric ozone, that the proper
tion of ozone in the air of Paris last year
was inverse to the mortality from chol-
| era.
The Michigan Agricultural College peO-
pie are testing the vitality OF seeds
buried in sealed bottles six years ago.
The seeds which thus far prove to have
most vitality are those OF common weeds,
! their percentages being from 80 to 100,
while plant seed did not terminate freely.
Dr. Giles, of the Indian Governments
Surveying Steamer Investigator, has OBJ
tanned some animals from the Bay of Ben
gal, winch appear TO be new, and has
proved that "the Swatch, - at the mouth of
the Hoogly, is deep, submerged valley,
forming part Of the original depression Of
the bay.
Senior Ugas, in medical journal at
Lima, calls attention to the veslcating
property of the inner bark OF the walnut
tree. He soaks the bark in vinegar for
about 10 minutes and applies 1t to the part
on which a blister is required. In apply
ing this remedy in cases Of lupus he dust.
ed the blister with calomel.
Experiments reported by NJ. Guignet to
the French Academy OF Sciences confirm
the views Of NJ. Frenzy that the behavior
OF chlorOphyl, or the cooring matter OF
leaves, is usually like that OF acid. NJ.
Guignet has obtained chlorophyllate OF
soda, and from it, by double deoOmposi-
ton, salts OF lime, baryta and lead.
Electricity has been brought TO the aid
of the sportsman by the use OF small
ha n q ri a IN
der it visible in the dusk or when from
any cause whatever there 10 insufficient
light. The minute electric lamp 10 fixed
near the muZzle OF the gun and shielded
by metallic screen. The current is sup
piled by small battery in the stock.
A paper by NJ. G. Witt on the presence
Of sulphurOus acid In the atmosphere OF
towns has been read before the Academy
OF Sciences, Paris. From the analyses
which be made at MontsOuris and else
where the author finds that sulphurOus
acid exists in the air OF towns where coal
Is consumed, its presence causing a con-
siderable diminutiOn OF atmospheric
ozone accompanied with the formation OF
sulphuric acid.
To manufacture Irldescent glass, tin
salt is heated in furnace until IL begins
10 yolatllize and the glass is exposed 10
the Vapors, when il becomes quickly
coated Win an lfidebceul MIN. In order
20 obtain y strong iridescence nitrate OF
barium or nitrate Of strOngtium is added
IN small quantity 10 the tin salt The
glass is not reheated for this purpose, but
tue objects are exposed 20 the yapor while
still in the hands OF the glassblower.
A thin coat OF pure glycerlne applied 10
both sides OF glass will prevent any mOis-
ture forming thereon. and will stay until
IL collects 80 much dust that II cannot be
seen through. Surveyors can use IL 20
advantage on their instruments in fOggy
weather. In fact, II can be used any
where to prevent moisture from forming
on anything; and engineers will find IL
particularly useful In preventing the ac-
emulation OF steam as we'll as frost on
their windows during the cold weather.
Observations OF the solar spots, faculg
and protuberances made AZ the Observa-
tory OF the Roman College, by NJ Tao
chini. during the 1rst quarter OF the
present year, compared with those Of the
corresponding period OF the previous
year, show that this year the spots have
been more numerous but OF relatively
smaller size, while Tut little diferenceis
noticeable in the recurrence Of the faculn.
The same popularity was again noted OF
q maximum Of facul1 c0inciding with a
minimum Of spots.