Amador ledger., 1907-01-11

of Changing Diet. A Novel
Messenger Service. - A Fir eman s
Veil.
A new application of science to
home industry is suggested by DR..
w. j. Russell. Nine years ago this
Investigator discovered that many
kinds of wood produce an invisible
image on dry plates in the dark, an
he has since shown that like action
is exerted by flowers. leaves, seeds,
roots and bulbs-in fact by practically
all vegetable substances except starch
cellulose, gum, sugar, pith and pollen.
The specimens are first pressed
between blotting paper, then laid on
the sensitive plate or paper for few
hours or a day. Pictures on sensitiz-
ed satin are adapted for a variety of
fancy articles, and it is predicted that
the making aud use of such work will
become very popular among the
ladies. The best results can be had
by placing the specimen and sensitive
material between thick felts under
pile of books over night, or until
ready to develop. Dry specimens
should be slightly molsteDed, and
action can be greatly increased by
first exposing the specimens to sun
shine for few minutes.
A crater without volcanic rocks is
among the geological wonders of
Arizona. Ten years ago q. W. Gil
bert supposed there had been at Coon
Butte a kind of subterranean volcano,
or explosion of steam, but the thou
sands of masses of meteoric iron in
the vicinity have since suggested that
the crater cone is the scar left by the
fall of an immense meteorite. Ex-
cavations are confirming this view.
Meteoric fragments are unearthed at
depths of 300 to 500 feet, and total
of ten or eleven tons of the iron has
been collected.
The largest room without columns
is said to be in a solid concrete
building of the mosque at Lucknow,
India. 1t is l62 feet long, 81 wide
and So high. The tim ber mold was
left year for the concrete to set,
and the building, I'D years old, is
still unimpaired.
The New York accident prevention
exposition of 1907 will be the first in
America. An exhibition of this kind
was held in Germany in 1889: one III
Amsterdam in 1898; and several others
have followed in Europe and Canada
A mum ber of permanent museums
have been developed. One was es-
tabIished at Vienna IN 1890; one at
Amsterdam in 1898, one at Munich b
in 1900; one at Berlin in 1901 and
even Russia has lately opened one at
Moscow. 10 show the value of the
instruction in saving life and limb Is
cited the fact that America has from
two to nine times as many accidents
among the same number of men in a
given trade as does Europe.
The protection of iron and steel
structures against corrosion by mois-
tuIe ard atmospheric gases is still
one of the serious problems of the
engineer. In recent experiments by
l.. f. Barker, various paints proved
ineffective, and he hit upon the plan
of trying paper. This was first i'm
pregnated with parattin wax. The
iron being then thoroughly cleaned
and covered with a sticky paint, the
paper was closely pressed to the ad
herent surface, with the edges some
what overIapped. Thus protected,
iron and steel-and even the sticky
layer of paint have remained in per
feet condition after an exposure tC
smoke for n months. PapeIed steel
was also exposed to moist air and
sewer gases, and was not attacked in
any way.
As flour undergoes fermentation
in the process of leavening, it has
been supposed that little alcohol
might be retained in the loaf in spite
of the ovens heat. This proves tc
be the case, one German chemist hav.
Ing found from 0.2 to 40 of absolute
alcohol in freshly baked English
bread, while another obtained a much
smaller amount-0.05 % to 0.09 per cent
from German wheat bread. Beside:
the alcohol, was found a little darH
brown oil, which had the odol
characteristic of new bread.
, The meat consumption is the Brit
! ish Isles increased from three pound:
! per person in 1850 to fifty pounds il
1900. DIR. G. Chalmers, of Edinburgh
r points out that this remarkable
change in diet is having effect in tn,
evolution of disease, but notes as
singular fact that there has been
material decrease in gout, although
diseases often regarded as of gout!
origin have increased. He has stud
led the effects on young rats of ex
cessive eating of meat. He has fount
a delayed and imperfect developmen
of the bones, and weakened cundi
tion whose counterpart he has oh
t served in young infant. When tn
child WAS hoTn the m0thar uac haiD,