The Vancouver independent. (Vancouver, W.T. [Wash.]) 1875-1910, 1876-09-16

The following are useful memoranda
for hydraulic calculations: cubic foot
of water=62 425 pounds; cubic inch
of water=0O3612 pounds; l gallon
10 pounds, or 0. IL cubic foot. The pres
sure of water per square inch in pounds
the head in feet multiplied by O.4335.
Sea water=1 OPP weight of fresh water,
or "a. II pounds per cubic foot.
Camphorated oil is highly recon-
mended as furniture polish. This is
simply sweet oil in which gum camphor
is dissolved. The camphor serves an
additional purpose of driving away
moths.
An ordinary boiler furnace requires
300 cubic feet of air for the consump-
ton Of each pound of coal. From 13
to 20 pounds of coal may be consumed
per superficial foot of fire CRATE. Three
quarters of foot of fire CRATE are re-
quired to evaporate one cubic foot OF
water.
The binding of books may be pre-
served from mildew by brushing them
over with spirits of wine. A few drops
of any perfumed oil will secure libra
ries from the consuming effects of mold
and damp. Russia leather, which is
perfumed with the tar of the birch tree,
never molds or sustains injury from
damp. The Romans used oil of cedar
to preserve valuable manuscripts. Rus
STA leather covered books, placed in q
st,tioner's window, will destroy flies and
other insects.
To make fy-paper: Dissolve i'll one
lon of ko,s n n -
senic and half pound of lump sugar,
in which steep sheets of white filtering
paper for a few moments, until they are
thoroughly saturated, during which
time the solution should be kept agi-
tated. Then hang the sheets on lines,
and when dry, cut up into pieces of con-
venient size for sale. When required
for use, place them IN shallow plates or
saucers, and moisten by pouring on them
just as much water as they will absorb.
They will he found to attract and in
simultaneously kill flies, wasps, gnats,
mosquitoes, and similar insects.
The actual horse power Of pumping
engines - quantity of water raised per
minute in cubic feet multiplied by
hight elevated in feet, multiplied by
1.OO23. The indicated horse power of
engines is found by dividing twice the
product of the area of the piston in
square inches multiplied by the num-
Der of revolutions per second multiplied
by the length Of the stroke in feet by
$50.
Useful numbers for pumps: The
square of the diameter multiplied by
the stroke, multiplied by O.7854, gives
capacity of the pump cylinder in cubic
inches: by 0.002S33, in gallons; by
0 OO04545, in cubic feet; by O.O2S33. in
pounds fresh water.
Resistance in pounds per ton on diff
ferent roads, exclusive Of the gravity:
Stone tramway, 20; paved roads, 80;
macadamixed roads. A, to 81; gravel
$50; soft sandy and gravelly ground,
21O.
The following are the ordinary dimen-
sions of windmill sails: Length of
whip, 80 feet; breadth at base, II inch
es; depth at base, inches; breadth at
tip, 6 inches; depth at tip, AZ inches.
The effective horse power is found by
dividing the product Of the total area
of sails in square feet and the cube of
the velocity in feet per second of the
wind by 1850, 600.
A FISH THAT LIVES IN THE MUD.-
Here's story of fish who can live
without water. This accomplished
scaly gentleman is o native of Africa
where most of the wonders come from,