The Hickman courier. [volume] (Hickman, Ky.) 1859-current, 1872-12-07
.NcLENTLEHc NOTES


NJ EUG. GAYor has produced cross
between the hare and rabbit which has
been fertile to the sixth generation
LALGE quantities of volcanic dust were
elected from Vesuvius during the recent
eruption A sample, collected at Ischia,
about twenty-five miles from the noun
tang, was composed of quartz and mag
netite without titanium
EXPERIMENTS were recently made in
Berlin to ascertain the effect of gas on
the roots of trees. The gas from the
street mains was delivered into the soil
in which two lime-trees and maple
were planted. After the lapse of two
months the roots were examined, and it
was found that all the fibers were dead.
The bark of the strongest scots was De
cayed, and even the woody part altered
The gas was then cut off to see If the
trees would recover; one of the limbs
produced a sickly crop of leaves, but
the other trees showed no signs of life.
BAERLE & Co., of Worms, recommend
the use of soluble glass in washing wool.
The operation is conducted as follows:
Forty 1arts of water are mixed with one
of soluble glass st a temperature Of 30
toS7 cents. The wool is then plunged
into the mixture and stirred about for a
few minutes; it Is then rinsed in tipid
water and is found to be clean, white
= s-xi devoid ofFodor After the operation
the wool is said to be perfectly soft.
and not to h,Se lost any of the proper
ties that fit it for the purpose to which
it is applied.
g DURING the last week ir.--1rry re-
markable excess. OF temperture prevailed
through out the southeastern half of
England, the maximum of the thermom-
eter being from five to fifteen degrees
higher in London than in Playmouth.
Considering the-s-lall extent of surface
of the easLa- under examination and the
s,<rat difference in temperature, result
like this appears TO indicate that the
heat at the surface of the earth varies
rather than changes IN the atmosphere
and its action on the suns rays than
with changes IN the sun itself.
NJ BoLEsTRA finds in the water of the
Pontine Marshes and similar malarious
regions a minute algoid vegetation with
an abundance of transparent yellow
spores which float off in the surrounding
air. These, he thinks, may in some way
be connected with the production of
miasmatic fevers.
MARASzoNI AND STEFAN ELI have dis
covered that film of an essential oil on
the zinc plates of voltaic pile has an
effect similar to that of amal0amation.
preventing local action to certain ex-
tent. 1t diminishes the quantity and
intensity of the current at the com
mencement of the action, rendering it
for certain time more constant. bat
stopping it entirely after two or three
hours In like manner the evolution of
hydrogen by the action of zinc on dilute
<salphuric acid is quickly arrested by
the addition OF an essential oil. bat is |
recommended on adding alcohol.-.Scyi5-
enr's for December.
In recent article In which the writer /
differs from an opinion for1nely express
ed by him, he supports his right to
change his opinion by quoting an old
dictum of Faraday's, that esshe only
man who ought to really to be looked
upon as contemplate is the man whose
ideas are not in a constant state of tran |
itsion.S
hDoAPH OFT works up tin scraps by !
placing them in a large perforated con-
per vessel, and rotating this in a bath Of
warm hytirochaloric acid for 80 to 80
minutes. The tin and lead are thus dis I
solved OFT with a trace of iron. The con- {
tents OF the copper drum are then
washed IN water, dipped into alkali. and
again washed in water, when they are
ready for the pudding furnace.
Ii has generally been supposed that :
the leaves. of plants neither absorb va {
por OF water nor water NJ. Cailletet
nnds that when the supply of water to :
the roots is sufficient this is true. but If I
the supply to the roots is insufficient the
leaves will absorb liquid water though
they viii not absorb watery vapor
NJ. LIeUIER has applied the Lenoir
gas-engine to the working of ranmer
Tor laying pavements. To the fiy-wheel
OF the engine hammer of steel. smaller
but heavier than tina. ordinary used is |
The movement of the ma {
chine is controlled by the operator, and
according to the inventor the rapidity of
is operation more then counterbalance l
he greater first cost. t
PRINTING on the tin-foiI has reached 7
70 high degree of perfection as to con- /
titute a new and beautiful decorative
IT. The tiD-foil is stretched ON a moist L
ned plate of thick glass and carefully il
moothed, the design is painted in oils r,
n the tin, and when perfectly dry it is "
arnished. The foil IS then removed m
rom the glass and transported to wood m
a. rollers to the surface or object to
hlci 1t is to be attached. this is cover
with a non-hygrometric gum, and of
e decoration applied The hexibility m
sns tn-foil enables the artist to attach tn
u tne most perfect manner even to co
9''ss = ~hieh are very irregular. wi