oved from, and give shaft over the twine and thimble another coat of
cement, and stand same upright in a vise. 10. Give the inside or hole of
roll a coat of cement with a small rod or stick. 11. Pull or force the
roll on the shaft as quickly as possible with a jerk, then rivet the
washer on with a cold chisel. 12. Let roll stand and get dry for two or
three days before using same. Cement for use should be so thick that it
will run freely; if it gets too thick, thin it with benzine or naphtha.

How to Make Effervescing Solution of Citrate of Magnesia.--Dissolve
citric acid 400 grains in water 2,000 grains, add carbonate of
magnesia 200 grains; stir until dissolved. Filter into a 12-ounce
bottle containing syrup of citric acid 1,200 grains. Add boiled
and filtered water to fill bottle, drop in bicarbonate of potash in
crystals 30 grains and immediately cork. Shake until bicarbonate of
potash is dissolved. The syrup of citric acid is made from citric acid
8 parts, water 8 parts, spirit of lemon 4 parts, syrup 980 parts.

A Receipt for Making the Black Cement that is Used for Filling Letters
after They are Cut out in Brass.--Mix asphaltum, brown japan and
lampblack into a putty-like mass, fill in the spaces, and finally
clean the edges with turpentine.

Useful Workshop Hints.--Clean and oil leather belts without taking
them off their pulleys. If taken off they will shrink. Then a piece
must be put into them and removed again after the belt has run a few
days. The decay of stone, either in buildings or monuments, may be
arrested by heating and treating with paraffin mixed with a little
creosote. A common "paint burner" may be used to heat the stone. Set
an engine upon three or four movable points, as upon three cannon
balls. Connect with steam, and exhaust by means of rubber hose. If the
engine will run up to speed without moving itself back and forth,
then that engine will run a long time with little repair. If it shakes
itself around the room, then buy another engine. Safely moving a tall
mill chimney has been accomplished several times. Chimneys which have
been caused to lean slightly through settling of the foundation may
be straightened up again by sawing out the mortar between courses of
brick at the base. A chimney 100 ft. high and 12 ft. square at the
base will be varied over 8 in. at the top by the removal of 1 in. at
the base. When you begin to fix up the mill for cold weather, don't
forget to put a steam trap in