Iron County register. [volume] (Ironton, Iron County, Mo.) 1867-1965, 1882-08-31
SCIENCE AND IsDUs7RT..

| SC1GNCE AND 1SUOSHhxs
During the past year about 1000
patents applying electricity in some
shape or manner have been granted.
1T was reported at the Nurserymen's
Convention recently held at Rochester,
N. T., thatrnearly all the pear trees set
| out in the Western States are raised in
New York.
Machines are now made which win
cut from q roll Of wire, pins Of the right
them, sort them out with their points all
one way and stick them into papers, or
rolls, faster than one can count.-St.
Louis Globe. h
1t is said that very fine effects arc
produced on unfinished cast-iron by q
mixture of petroleum with French vel
low, the result being fine bronze yell
low, not liable to ordinary wear, and
if applied hot, filing the pores Of tho
metal, defying anything short OF the file
or planer tool to obliterate it.
A new use for glass has recently
been developed id its substitution for
marble tops of tables and dressing cases.
A Pittsburg, Pa, firm has turned out
slabs of glass that are said to be per-
feet imitation of the latter material,
while they admit of decorations OF var.
ious designs, both in form and color.
The genius of the Yankee has come
to the rescue of the horse suffering from
CALLED shoulder from the heat and i'll
shape of hard collars by inventing col
lar from catkins, or flags, which grow in
swamps. The cost is trifing, and it is
said not only to prevent CALLING but will
cure it, by adapting itself to any neck
or shoulder, and is light, cool and cheap.
Detroit Post. 49,
"A new explosive called ssdynamo-
gen. is claimed by its inventor, DR..
Petrie, of Vienna, to be superior in
nearly every respect to gunpowder-it
is cheaper, safer and more effective,
while it contains no substance that can
injure the guns. In view of the an
nouncement of so many new and great
ly superior explosives it seems little
singular that the old-fashioned gunpow-
der-first used at a period SO remote
that its origin can not be traced-should
be the chief dependence of modern ar
tillery.
The proportion of salt in the water
of the ocean varies greatly in different
localities. M. de Ia Grye has made q
series of observations on the subject, in
which-among many interesting results
he has found that the sadness dimin-
ishes rapidly as coast is approached,
due, probably. to the freshening by riv-
ers discharging into the sea. The salt
also lessons on the approach of icebergs.
These facts would seem to have an inn
portant bearing on navigation, as in bad
weather tests of the sadness of the
water might enable the mariner to avoid
running into unseen coasts or icebergs.
1t is thought that the demand for a
cheap insulating material has been met
by discovery of method by which
wood, sawdust, cotton waste, paper
pulp, and other fibrous, substances can
be converted into q material perfectly
impervious to moisture and acids, easily
nodded under pressure into any shape,
and capable of being worked into any
form. This material is an excellent
non-conductor of electricity, and can be
used for all forms of battery cells, tele-
graph insulators, supports for electric
light leads and telephone work. It affords
the means of securing perfect insulation
at very much less cost than ebonite or
gutta-percha. Chicago Times.