Eureka daily sentinel. [volume] (Eureka, Nev.) 1871-1887, 1884-12-10

Paragraphs That Note the Latest
Obser yations and Discussions.

Paragraphs That Note the Latest
Obser yations and Discussions.
All the world breads smallpox. and,
hence Is interested in
THEoR OF ~vAocINATIoN.
Prof. Tyndall suggests that, just as the
soil may be so effectually robbed by some
essential ingredient by one abundant crop
as to be incapable Of producing another.
SO i'll the human system a parasitic disease
may SO completely exhaust the blood Of
some ingredient necessary to the growth
and propagation Of the parasite that the
production of a second crop in fatal or con-
siderable quantity may be impossible. II
would thus appear that protective vaccina-
ton or incubation is simply the introduce
ton into the blood Of weakened and CON-
paratively harmless disease germs to con-
sume the material which might become
food for similar germs in q more vigorous
and dangerous condition.
WIND WORK.
A gale at East St. Louis in 1871, accord.
ing to Mr.. @. Shaler Smith, overturned q
locomotive, exerting q force Of no less than
81 pounds per square foot. At st. Charles
q Jail was destroyed in 1877, the pressure
required being "a pounds per square foot.
At Marshfield, in 1880, a brick mansion
was leveled, the force necessary being So
pounds per square foot. Below these ex-
traordinary pressures, Mr.. Smith has in
stanced numerous cases of trains blown of
the rails. and bridges, etc., blown down,
by gales of "a to 81 pounds per square foot.
Successful experiments in distributing
the electric light to great distances have
been made In connection with the Turin
Electrical Exhibition. A. Siemen's ma
chine of 30-horse power generated q cur
rent, which was simultaneously used by
several electric light systems spread over q
circuit of about IS miles.
A motor driven by small charges Of gun
cotton is an English novelty. 1t is said to
be applicable wherever small powers are
required.
of the modification Of plants by insects, 80
as to produce new varieties.
eREAT WORMS.
According to Mr.. F. E. Bedahd, q Lon
don zooligist, e%arthworms two feet in
length have been found in the British Isles,
and various species ss large or larger are
known to exist in South America, Western
Africa, Australia and New Zealand. The
largest species known, however, inhabits
South America. Forty years ago q speci-
men was described, which measured six
feet two inches in length, but it seems to
have been nearly forgotten until the other
day, when a gigantic creature of the same
species. was sent to the London Geological
Gardens from Cape Colony. The longest
measurement OF this worm yet taken
reaches six feet five inches, its diameter
being nearly half an inch.
MONEY VEGETATION.
A short time since Paul Reinsch discov-
cred several kinds of minute plants-in-
Guiding two algae which had before been
unknown-growing upon coins after hav-
ing been long enough in circulation to re-
ceive thin demonstrations of organic matter.
A Hungarian botanist, Jules Schaar-
schmidt, has more recently found the
microscopic growths upon paper money,
even the cleanest specimens not being free
from them. He has detected seven species,
including-although they are rare-the two
new algae described by Reinsch.
PICTURES OF SOUND.
Some remarkable photographs of o pistol
bullet in its Highlander the illumina-
ton of an electric spark-havs been &c.
cured by Prof E. Mach. of Prague. He
has also photographed the air steams
which one may see over a Bunsen burner
placed in sunshine; and has even obtained
pictures of waves of sound, these last be-
ing made visible by a method in which
advantage is taken Of the irregular refrac-
ton of light by air set in vibration by
sound.
A French astronomer has found reasons
for believing that a circular ~protuberance
presumably q ~volcano-which exists in
the southern hemisphere Of Venus has an
elevation of not less han 10 miles. He
regards such a vast mountain as not in
compatible with the plants volcanic
nature.