The true northerner. [volume] (Paw Paw, Mich.) 1855-1920, 1879-07-04
MULrux IN pARvo.


Inc New 1Ork deTQtu thus ueecr1Oe
q horsepower: This question is fire.
quently asked: What is understood b.
horsepower, and why came that wa,
Of reckoning to be adopted and brough
into general use? Before the power o
steam was generally known and applied
to mechanical purposes, horses were
used to raise coal and other heavy
bodies. Mr.. Moots, in his experiments
carefully compared the relative power
of the different breeds of horses, anC
found its average equal to raising 33,
600 pounds one foot per minute, or
what is equivalent, to raise $50 pounds
100 feet, or 100 pounds $50 feet during
that space of time when attached to 9
lever or sweep of given length. This
afterward became the standard of meas
uring power or force applied to me-
chanical purposes, and which is still re-
tanned in common use.
A CONVENIENT LAND MEASURE.
To aid farmers in arriving at accuracy
in estimating the amount of land in diff
ferent fields under cultivation, the fol
lowing table is given:
Five yards wide by 968 long contains
one acre.
Ten yards wide by 4s4 long contains
one acre.
Twenty yards wide by 242 long con-
tains one acre.
Forty yards wide by 121 long contains
one acre.
Seventy yards wide by 69t long con-
talns one acre.
Eighty yards wide by 603 long con-
tains one acre.
Sixty feet wide by 726 long contains
one acre.
One hundred and ten feet wide by
1897 long contains one acre.
One hundred and thirty feet wide by
1868 long contains one acre.
Two hundred and twenty feet wide by
1914 long contains one acre.
-Four hundred and forty feet wide by
SO long contains one acre.
EXCELLENT INTEREST RULES.
Finding the interest on any principal
for any number of days. The answer
In each case being cents, separate the
two right-hand figures of the answer to
express it in dollars and cents. Four
per cent.-Multiply the principal by
the number of days to run; separate
the right hand figure from product and
divide by 9. Five per cent.-Multiply
by number of days and divide by r..
Six per cent. Multiply by number of
days and divide by 45. Nine per cent.
Multiply by number of days, separate
right-hand figure, and divide by G..
Ten per cent.-Multiply by number of
days, separate right-hahd figure and di-
vide by 80. Twelve per cent Multi
ply by number of days, separate right
hand figure and divide by 3. Fifteen
per cent-Multiply by number of days
and divide by "a. Eighteen per cent
Multiply by number of days. separate
right-hand figure, and divide by g.
Twenty per cent.-Multiply by number
of days and divide by Is. Twenty.four
per cent.-Multiply by number of days
and divide by Is.
ESTIMATING MEASURES.
It is often useful to have few ap-
proximate data to deduce weights and
measures from. Here is q correct table,
which, however, does not aim at great
accuracy, but may serve to make a rough
estimate when it is necessary to reduce
measures:
A pint of water weighs nearly pound
and is equal to about q cubic inches, or
square box 3 inches long, 3 inches
wide and 3 inches deep.
A quart of water weighs nearly 2
pounds and is equal to square box of
about A by 4 inches and 81 inches deep.
A gallon of water weighs from 8 to
10 pounds, according to the size of the
gallon, and is equal to box 6 by
6 inches square, and 6, 7 or " inches
deep.
A cubic foot of water weighs nearly
SO pounds-more correctly 62i pounds
and contains from to 8 gallons, ac-
cording to the kind of gallon used.
A peck is equal to a box 8 by 8
square and inches deep.
A bushel almost fills box IL by IL
inches square and "a inches deep, or 2
cubic feet.
A barrel of water almost fills box 2
by 2 feet square and II feet deep, or 6
cubic feet.
Petroleum barrels contain 40 gallons,
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