Amador ledger., 1910-09-09

turned yellow, the shades ranging
from lemon to dark orange; few, APP
parently from another locality, be-
came green, pinkish or amethyst color,
and very few changed to rose color.
A light blue was impaired to two or
three too light to give value APP
preaching that of the much priced
| deep blue sapphires, pale emeralds
were somewhat darkened by radium,
but were not given the deep green of
the expensive stones. Brown diamonds
were bleached almost white, nothing
being obtained like the beautiful blue
gem into which Sir VIM. Crookes
transformed yellow diamond.
Amethysts were altered by radium in
to smoky or yellow quartz, dirty APP
pearing pearls were cleaned to a
clearer white, but opals were not
amenable to treatment.
Hemoglobin, an albuminoid sub
stance containing iron and sulphur,
gives red blood corpuscles their color
and is the carrier of oxygen from the
lungs. 1t is possible to isolate and
even crystalline it, and DIR. E. T.
Reichert of Philadelphia, experiment.
ing with the blood of $500 living
animals, has endeavored to classify
the varying forms of crystals accord
ing to their sources, and to read in
them some new lessons in evolution.
The crystals from a white man ssare
narrow rectangular columns. Those
from the orang -Outang are very SINH
lar. but those from negroes and goril
las are short and thick. The hemo-
globin crystals prove the close re-
lationship of the domestic cat and the
African lion and of the horse and the
mule. Such crystals may have prac
tical Importance in criminal cases,
and may decide whether d, drop of
blood is from man, woman, child,
adult, old person, white, or negro.
The rust-proof black coating pro-
duced on iron or steel by boiling in a
solution of ounces of phosphoric acid
and ounce of iron filings in l gallon
Of water has been tested by immersion
for year in salt water. The metal
remained uncorroded, while "a similar
untreated piece was badly rusted.
The thermal storage system of
Druitt Halpin accumulates hot water
during the hours when a boilers load
is light, and thus adds to the steam
raising capacity when the demand is
greatest. The spherical ended storage
cylinder of boiler plate is placed hori-
zontally over the boiler, with steam
pipe leading from the top of the boiler
through the bottom of the cylinder and
almost to it's top. A second pipe
leads from the bottom of the storage
cylinder downward into the boiler be-
low the usual water level. By this ar
rangement the storage cylinder is
filled with steam from the boiler, and
the live steam heats the feed water
entering the cylinder and flowing by
gravity into the boiler. By a valve in
the second pipe, the feed can be so
regulated that when little steam is be
ing used more water enters the cylin-
der than flows from it into the boiler.
The hot water nearly fills the cylinder,
and is drawn upon when more steam
is needed, the cold water entering the
cylinder being then cut off, In Lon
don electric light plant a storage cy-
Under 8 feet in diameter and "a feet
long was placed over each of the four
watertube boilers. Tested at its
highest capacity. one of the boilers
showed an increase in evaporation of
about 60 per cent during nearly three