The home journal. (Winchester, Tenn.) 1858-188?, 1874-02-12
NUMBER 4S.
POPULAR SCIENCE.
New Theories New IIlustrations-Nev
Discoveries.

Discoveries.
SPIRIT PHOTOGRAPHS. - The spirit
photographs which pass current among
credulous spiritualists for genuine
ghosts Of the departed are produced in
various ways. The latest and most
scientific method is as follows: The
plain background screen, before which
the sitter is placed in order to have his
portrait taken, is to be painted before
hand with the form of the desired
Esprit" the paint being composed of
some huorescent substance, such MS a
solution of sulphate of quinine. When
this painting dries on the screen, it is
invisible to the eye but it sends out
rays that have power to impress the
photo plate and thus the image of the
person together with the quinine ghosts
are simultaneously developed upon the
negative. Scientific Amcrican.
AMERICAN IRoN.-American iron is
conceded to be superior in quality and
strength to English. The following
comparisons will show the relative ten
sility of Lake Superior and English iron,
trials having been made by the use of
the testing machine made by Richie Of
Philadelphia, which is that used for all
tests in which the government is con-
cerned A one and one.fourth inch
chain OF Lake Superior iron withstood
draft of lO1, $50 pounds, while chain
of English iron of the same size broke
at test OF rs, 800 pounds. A tive.eighth
inch chain, American, 2LS75 pounds
| IL A thrnn- fourth
inch chain, American, $4,000 pounds;
English, q, 600; a one.half inch chain,
American, 1885; English, $500, and
Il seven sixteenth inch cha n. American,
10, $50 pounds; ; English, ., $50.
HEAT OF THE SuS.-The heat OF
the sun nowhere penetrates the ocean
more than six hundred feet AT depth
of from one to two miles the tempera-
ture is everywhere about four degrees
below the freezing point, caused, pro-
badly, by the ice water poured into the
ocean from the arctic regions, northern
and southern. This, being heavier
than the surface water, sinks to the bot
tom and forms currents ever flowing
toward the equator, to tax the place OF
the water which, there heated and rem
| dered lighter, rises to the surface and
| forms the Gulf and other warm streams.
| As these flow again toward the arctic
regions, it will bc seen that a perpetual
circuit is kept mp, the arctic waters con-
tinually lcssening the heat of the tropi-
cal waters, and these, in their turn, CIV
ing out their heat as they flow away
from the tropics. England is warmer
then Greenland only because of the
warmth derived from the Gulf stream.
| A RECENT MIRAGE AS SEEN FROM DEN
vER.-The mirage is frequently seen
on the plains, and ten, in the early
days, when people Travelled with OK
teams, it presented TO the weary, ex'
hausted and thirsty gold-seeker the
appearance OF water, apparently within
easy reach, yet, alas, delusion an u
snare that led astray, disappointed and
disgusted every body. But probably
= the most perfect, picturesqe picture, in
the limo of optical illusion, ever seer
, in these parts, by either old-timer ol
| new conner, appeared, last evening,
little before sundown. A double o.
! reversed image of the Rocky mountains
from Mount Vernon to the Cache-la
Poudre, and from the foothills back to
the grandest peaks, was suspended in
the air on the east of the city, and ap
pareutly Just beyond the outermost
houses. The ref action was so perfect
that the few who saw the image was
actually puzzled to distinguish between
the real and the fictitious mountains
The lovely, but unsubstantial picture,
with its hcaped-up beauties in endless
variety, was quickly dissipated, the
! white turban on Longs peak being the
last object to vanish.
, THE MYSTERY OF PEHFUME,-No ONT
hq vet been able to analyze or demon
, strate the essential action OF perfume
, Gas can be weighed, but not scents
! the smallest known creatures-the yer
I monads of life-can be caught by m
- croscopic lens and made to deliver II
h the secrets of their organization; br
/. what is it that cmanates from the pouc
i of the musk deer, that fills who
"a space for years and years with its pen
# trating odor, an odor which an illim
y table number OF eXtraneous substanc,
30 can carry on without diminishing 1t
~ size AMI weight-and what is it that tt
10 warm summer air brings to us from tl
20 flowers, no man has yet been able
h determine. So fine, so subtitle, so in
q ponderab e, it has eluded both on
. most delicate weights and measures
=, and our strongest lenses. If we com
% to the essence of each odor, we shoul,
have made an enormous stride forward
both in hygiene and in chemistry; an,
none would profit more than the med
= ical profession il it could be as conclu
,, sively demonstrated that such an odo
d proceeded from such and such cause
. as we already know Of sui phur,, sui
y phurated hydrogen, ammonia and tn
Q like.
r. The REPRODUCTION OF PAST STATE
V OF CONSEQUENCES DR.. Carpenter, Il
n the Contemporary Review, gives some
r interesting illustrations OF physlologieaa
e influences on the habits OF Thought
d The reproduction of past states OF con
II ciousness is described to be an auto
J. matte action. The theory is that Tia
W chemical action OF blood in the brain
d sort of registering process, which,
d it is properly pursued, leaves an indie
l. ible impression that can always be r
II produced under the proper inhuenc
II A case of forgetting and recovering
II language is peculiar illustration OF
II, olnn.n thn action nf nj