er?
A. Multiply in inches the circumference or square of
furnace, by its length, then multiply, the circumference of one
tube by its total length, and this product by the number of
tubes also taking into account the surface in tube sheet, add
these products together and divide by I44, this will give you
the number of square feet of heating surface in boiler. Divide
this by 14 or 15 which will give the H.P. of boiler.

Q. Why do you say 14 or 15?
A. Because some claim that it requires 14 feet of heating
surface to the H.P. and others 15.
To give you my personal opinion I believe that any of the
standard engines today with good coal and properly handled,
will and are producing 1 H.P. for as low as every 10 feet of
surface. But to be on the safe side it is well to divide by 15 to
get the H.P. of your boiler, when good and bad fuel is
considered.

Q. How would you find the approximate weight of a boiler
by measurement?
A. Find the number of square feet in surface of boiler and
fire box, and as a sheet of boiler iron or steel 1/16 of an inch
thick, and one foot square, weighs 2.52 pounds, would
multiply the number of square feet by 2.52 and this product by
the number of 16ths or thickness of boiler sheet, which would
give the approximate, or very near the weight of the boiler.

Q. What would you recognize as points in a good engineer.
A. A good engineer keeps his engine clean, washes the
boiler whenever he thinks it needs it. Never meddles with his
engine, and allows no one else to do so.
Goes about his work quietly, and is always in his place,
only talks when necessary, never hammers or bruises any part
of his engine, allows no packing to become baked or burnt in
the stuffing box or glands, renews them as quick as they show
that they require it.
Never neglects to oil, and then uses no more than is
necessary.
He carries a good gauge of water and a uniform pressure
of steam. He allows no unusual noise about his engine to
escape his notice he has taught his ear to be his guide.
When a job is about finished you will see him cleaning
his ash pan, getting his tools together, a good fire in fire box,
in fact all ready to go, and he looses no time after the belt is
thrown off. He hooks up to his load quietly, and is the first
man ready to go.

*Q. When the piston head is in the exact center of cylinder, is
the engine on the quarter?
*A. It is supposed to be, but is not.

*Q. Why not?
A. The angularit