Herald and tribune. [volume] (Jonesborough, Tenn.) 1869-current, 1886-11-25
SCIENTIFIC FACTS.
What the Searches Into Science Find
For the People.

W OuiCoS VI 'iC'tuOl, Will HUI EuSb |
.Ad tarnish, and has no bad smell.
Steel plates in the fire box, it is said, |
can be prevented from cracking by
washing out with cold water after be- |
ing blown out. Hot water will have |
contrary effect and produce crack.
An electric spark in dusty atmo-
sphere causes dust to settle, and, if the
air be smoky, clears it. This Is prob
IDLY one reason why the air seems so
clear after thunderstorm, eveniflittle
rain has fallen. A
One Of the vegetable specimens at the
Colonial Exhibition in London was
portion of gigantic arbor vita grow
tig in Biitish-Columbia. The tree is
tyenty-one feet in circumference and
two hundred and fifty feet in height
following the example of the United
States, the japanese are to adopt sys-
TEN of standard time, beginning with
fhn year 1888. The time of the merid-
ian Of 135 degrees east longitude will
be the time for the whole of Japan.
The recent volcanic eruption in New
Zealand has not proved an unmitigated
evil. The dust which was thrown out
50 abundant; exerts most fertilizing
iihilence upon the soil where 1t fell, or
20 which it has since been applied.
1t appears that there is a liability to
iainry Of the eyes where the electric
| ut is used, by reason of the illumina-
m being too weak. This dangeris
i to arise in reading-rooms. 1t has
- areading society ut Zurich to aban-
,lon the use of electric glow lamps.
There are now more than two thou
sand species and varieties of woody
WANTS in the botanical garden known
IS the Arnold Arboretum, which be-
i)ngs to Harvard University. 1t is
licher in species than any other collec-
Ton of living plants in the United
States
A story about the Bell Telephone pat
cnts having been offered to Senator
Cameron at a mere nominal price, early
| il the history of the invention, has been
';oing the rounds Of the press. 1t was
mentioned to The senator, when in New
I York, when he said: "rhere Is not a
word Of truth in it. / never spoke to
DR.. Bell in my life, and scarcely know
| hin by sight, although he lives near me
at Washington
/ To cement wood and glass together,
mix some linely-plllvcrized, well dried
dnc-white with clear copal yarnish, in
| hth quantities as to produce half
| ,lrid preparation. Spread this over
| q parts to be cemented, and it will DO
jand that they will be jointed firmly
ogether. Thi, cement has the adyan-
tage over many Others in that it does
not injure the most brightly-pOlished
oak wood and wi bear the test of wash
ing with warm water
J There has been published, in Germ
any, the narrative of an expedition sent
out from that country last year to ex-
| pore' the German territories in south.
/ western Africa, between the Orange
River and Walish Bay. The results are
extremely unsatisfactory. The party
were to ascertain what useful minerals
/ aimals and plants the country con.
| timed. The answer is, practically none
rh4re is no rain, and there is scarcely
~ thinking water. ALI ideas Of estab.
aing colony there must be aban'
uuned
"!nvcntion' describes new patent fol
. reni'cring wood incombustible, in which
iiir wood is first welldried and after
Il impregnated with a solution O.
ns. It four parts, by weight, of bora,
about three parts, by weight, of ep
salts in about twenty-parts, b,
1t, of hot water. The impregnatet
is coated with q mixture of no
md a sufficient quantity of liquit
! N lass to enable the mass to b,
4 by means of apaint-brush. TIL
having again become dry, is GOV
with paper or with woven fabric
liter having likewise been impreg
a with the solution. Lastly, tn,
e is painted over with mixtur
{ I'M thirty to forty parts, by weight
> lphate of amonia, and from thirty
to forty-tiye parts, by weight, o
J, I'M, diluted with a sufficient guam
Of water. i49a4aa st4
A Proposed method for making win
dow-glass by rolling instead Of blowing
as been described recently in the Pitts
,urgh papers, and commented upon a
! ome length. Though the description
il theprocess is not very clear, itwoul
I ,em as IL the intention Of the invento
2 to run the molten glass as 1t come
ON the pot between two hollow re
farsible rolls heated with natural ga
by pipes full of perforations placed o
ene inside Of the rolls. As the role
+ lass passes through the rolls 1t Is n
: eeived on the opposite side on an iro
: late, also heated, from which 1t
: passed into the annealing furnace.
q is claimed that by this process glas
9 of uniform thickness and polish read
y for the sash can be made. 3
u ---.-->t~--s--
The good we can accomplish in tn
!, world is small; the good that all men
1. alIages could accomplish If they wou
! Is vast But in order that this may
IT done each working being must ser'
. HE our, eyau orafini and do hig mart