The Ohio Democrat. (Logan, O. [Ohio]) 1886-1906, 1888-09-08
SCIENCE ANp lNpUsTav.

M. Chevreul, the centenarian chem
lst, says that the modern dyer controls
10, 900 different shades OF color.
"A negro farmer in Dougherty coun-
ty, Ge., has succeeded In making ex-
cellent sirup from watermelons, and
thus a new use is devised for the sur
plus crop.
Hard wood cut in June, July or
August, and left ,lntrimmed until the
leaves have drawn the sap from the
trees, makes the most solid and lasting
timber.
1t has been observed in Italy by
Palmieri, that on a clear day, with
every indication of continued fine
weather, the electrometer will indicate
change long before the barometer.
Among the recent mechanical in.
ventions Is nail machine which cuts
either wire or cut nail with equal
facility The construction Of this ap-
paratus is quite simple, as compared
with ordinary wire nail machines.
With it, cut nails Of square section,
with either u diamond or q chfsel point,
may be produced as easily as the COM
mon nail, and the change from wire to
cut nails may be acco omplished in few
minutes.
Extended observations at Paris
and at Munich indicate that the sani-
tary condition of locality depends on
the amount of water contained In the
ground. The years in which there has
been large quantity Of ground-water
present have invariably been the
healthiest years, while those in which
there has been smaller quantity have
invariably been the unhealthiest pc
riods.
"A large establishment In Pitts
burgh has been using petroleum resol-
vent in its boilers for three years with
out spending a cent for repairs, while
previously the boilermakers' gang were
at work on them every Saturday night
in the year. Worse scale could scarcely
be found before the use Of the resol-
vent, while now their condition is pro-
nounced by the inspectors as the clean
est boilers in the country.
The Lancet defines the disease
which is known as "The Sightseer's
Headache" as natures tax levied
on the comfort of that great body of
busy idlers to which we all at some
time or other belong. 1t is endemic
among the frequenters of museums,
picture galleries, and exhibitions, vary
ing somewhat perhaps in different
cases in its precise causation, but asso-
oiated always in a manner significant
of its origin with the habits of the OBJ
servant loiterer."
1t is claimed to be proven, beyond
all doubt, that waters which circulate
or stand in leaden pipes or vessels, not
only take up particles of lead through
mechanical action due to friction, but
attack the mental, the result Of this
being generally lead carbonate. Ac-
cording to the most eminent authorities
in this line, minute quantities of lead
thus introduced into and accumulating
in the system, must rank among the
causes of anamia and defective nutri.
| tion in large towns.
-"It can not be too widely known" :"
writes medical man, "that cream
separated by machinery from pure new
| milk, before 1t has cooled, is q full SUBJ
| stitute for cod liver oil and that if, dur
ing the cold weather, those who have
delicate constitutions which need con-
centrated nutrition but who can not
overcome the nausea associated with
cod-liver oil, will take this description
of cream they will find in most cases,
immense and lasting benefit. In sew
eral hospitals it has already quite
superseded the nauseous oil.
Some remarkable changes have
recently been noted by M. Perrotin on
the planet Mars. In a letter to the
Academic des Sciences, he reports that
the tract of land on both sides of the
equator, which has been named Lydia,
seems to have been submerged by the
sea. ltwas distinctly seen by him two
years ago, when it was bounded on two
sides by sea, and ON the others by one
OF the streaks to which NJ. Schiaparelli
gave tho name of canals, but now does
not exist A drawing made by him in
1882 shows the same appearance, which
leads him to the conclusion that the in
undation, If it be such, is periodic.