Pittsburg dispatch. [volume] (Pittsburg [Pa.]) 1880-1923, 1891-04-05
IRON IN THE BEER.
A New Beverage From France-Impurities
Left in City Air by Coal Smoke-Ab-
sorption of Light by Diamonds-New
Surgical Dressing.

u
Left in City Air by Coal smoke-Ab-
sorption of Light by Diamonds-Nev
Surgical Dressing.
PREPARED FOR THE DIsPATcH.l
A RECENT development of astronomical pho
Biography is that by collating the observations
at different dates it is possible to calculate the
stars which had never been separated usually
by any telescope yet made, and probably never
would be.
In response to inquiries as to how hard rub
Der can be polished. the following instructions
are given: Use felt lap charged with the
finest grade of pumice stone. mixed with
enough lard oil to make a thick pasta. Run
the lap at high speed, and, of course, apply
the rubber to the side and not to the rim of the
lap.
A GALLON pail, flled with fine sand, placed
within easy reach of each workman employed
where oIing and finishing is going on. is strongly
recommended as an essential part of the equip
menr for fire protection in woodworking estab-
lishmunts. 1t has been found that nothing will
subdue an oil-fed fire SO quickly and effec.
tually as sand, and the subsequent freedom
from water damage is a strong point in its
use.
A NEW material, which has been named
"Christia," has been introduced for surgical
dressings 1t is membraLe-like tissue, made
by process of felting the pure fibre of the
MANILA hemp. 1t is very light and strong, im-
permeable to water, spirits of all kinds. oils
and acids. It is made neutral. SO that it can be
rendered antiseptic with any desired medica-
ment. 1t will stand tropical heat and Arctic
cold, and is particularly adapted for India and
other hot climates, where gutta percha tissue
and oiled silk become in short time amalga-
mated. Its cost is half that of oiled silk.
MANY persons who extend their mental work
well into the night, or during the evening fol-
low attentively the programme of theater or
concert. are awaked in the morning or in the
night with a headache. A Swiss doctor in
stead of going directly to bed, takes brisk
walk for half an hour or an hour. While taking
this exercise he stops now and then and prac-
tices lung gymnastics by breathing in and out
deeply few times. When he then goes to bed
he sleeps soundly. Notwithstanding the short
ening of the hours of sleep, he awakes with no
trace of headache.
RAILROAD sea-sickness has been very much
reduced among passengers since the vestibule
has been generally used, more particularly on
roads having many curves. 1t is stated that
there is hardly a pattern Of iron gates In use
which is not liable to be SO jammed in case of
a collision as to impede, if not prevent, the
egress of passengers. but both safety and COM
fort are secured BY the use of sliding door
which has just been patented. In this
rangement the doors slide into the car, leaving
the platform entirely unrestricted. This is
or in special partition inclosing seat.
A BRUSH with which the upper as well as
the lower sashes of windows may be readily
cleaned, and with which the outer faces of the
panes may be as easily cleaned as the inner faces
has Just been patented by lady. The handle of
the now brush is made in two or more sections
one section screwing into an other TO lengthen
the handle. The end of the han die thus formed
is screwed into a threaded aperture in oae end
of a horizontal plate. and into the other end of
the plate is screwed a pole, also constructed Of
a series of sections screwed together. The Sec
tions of the pole and brush handle are prefer
ably made tubular, SO that the parts may be as
light as possible.
In recent article on "Precious Stones"
most beautiful experiment in the absorption of
light by diamonds which was carried out in
Paris during the Exposition. was referred to.
On this occasion collection of $50 diamonds
was placed in . dark room. In side of the
room was inserted . lens, outside Of which an
arc lamp WAS hung. The lens, which was en-
ployed to concentrate the light, was covered
with violet-colored glass, so that only ultra
violet rays fell on the gems, Of which bur three
of the entire number proved to be phosphores-
cent All the others assumed . beautiful vio-
let tint. The two stones whose phosphores-
cence was most marked were perfectly trans
parent white stones, one having blush t1nge.
The phosphorescence exhibited by these stones
Ii described - extremely beautiful and re-