The Toledo chronicle. [volume] (Toledo, Tama County, Iowa) 1873-1924, 1876-09-14
INDUSTRIAL, STATISTICAL
AND TECHNICAL.
PARIS has TO- 900 confined -lunatics

PARIS has 10000 confined lunatics.
THERE are $50 journals of the Ger
man language published in this coun-
try.
The petroleum spectators are hap
py; the article has advanced, within
three months, 81 per barrel, placing
millions of dollars in their pockets.
To DETERMINE the amount of coal
in pounds which will be burned per
square foot per hour with chimneyS of |
good proportions, Prof. Thurston's |
rule is to subtract one from twice the
square root Of the height of the CHM
ney. To determine the height of CHM
ney required to give certain rate of
combustion, add one to the weight to
be burned per square foot per hour
divide by two and square the quotient
THE London Engineer states that
recently a tiywheel three tons weight,
nine feet in diameter, cast in one
piece, having worked for years as part
of a steam engine, was laid horizontal
ly on two balks of timber in the yard
of the West Hartlepool cement works,
England; the wheel was left perfect at
night, and was found next morning
fractured in several places, no person
having touched it. The day previous
the suns rays had heated the rim con-
siderably, and the night being cold, the
arms having retained but little heat,
contracted too rapidly, swapping from
the boss and rim of the wheel.
Mr.. MORGAN, an English Consul
resident in Brazil, cites, in a recent re-
port to his Government, the carnouba
tree, species Of palm (copernicia CERT
.ferd) as one of the most valuable pro-
auctions of the country. 1t tlourishes
without culture at Bahia, Rio Grande
ties, resists drought, and always APP
pears green and luXuriant. Its roots
possess properties similar to those of
the sarsaparilla. The trunk furnishes
a superior fiber. When the tree is
young, it yields wine, vinegar, a sac
charine matter, and species of gum
closely resembling sage. Its wood is
excellently suited for the manufacture
of musical instruments, as well as for
tubes and conduits for water. The
pulp of the fruit is very palatable, and
the oily nut roasted and pulyerized is
a good substitute for coffee. The
trunk also yields a flour similar to
maizena,. With the straw, hats, brooms
and baskets are made, and over half
million dollars worth of it are export
ed to England yearly. Lastly, wax,
used in the manufacture of candles, is
extracted from the leaves.
a NOVEL construction of a feed
water heater for steam boilers is pro-
posed, the arrangement being also in
geniously designed to operate as a
bOilerwasher to prevent the accumu-
| lation of mud in the bottom of the
same. 1t is Il well known fact that in
all boilers there will be, in spite of
mud drums, an accumulation Of mud
in the bottom Of the boiler, which pre-
vents the water from coming into di-
rect contact with the metal, which lat
ter, becoming very much heated, fire.
quently results in disastrous explosion.
This is especially the case with large
longitudinal boilers, and with boilers
used upon the Western rivers, where
| the water is always more or less i'm
pregnated with sediment. The plan
in this invention consists in a series
of nozzles arranged in the bottom of
the boiler, through which the feed
water is delivered in jets against the
bottom of the boiler, and the metal
| kept clean and free from an accumu-
lation of mud at the points where it
has tendency to settle; the feed water
heater is also constructed in such a
manner that the water is retained III
the steam space for longer time than
usual.