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182
Asphalt Ink
Marking To be used for marking Ink
Ink Make a solution of genuine Asphalt
in Alcohol. It is known as Indellible
Carbon Ink Dec 18 1875
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Grease Spots from Paper
Grease Warm the paper and cover it on
Spots both sides with finely powdered
pipe clay and place it under a
light pressure for a few hours.
The dust of the clay and remove
the fine dust with a piece of Rubber
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Lathe Cement
Lathe Beeswax 1 oz [ounce], Resin 1/2 oz [ounce], Pitch 1/2 oz [ounce]
Cement Melt and stir in fine Brick dust
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Medicated Ice
When children do not like to take
Medicated a gargle for Scarlatenal sore throat
Ice it can be given as a medicated Ice.
for Take a large test Tube, put in the
Medicine mixture and then immerse the tube
in a mixture of pounded Ice and
Salt and freeze it like Ice Cream.
When quite solid, a momentary dip
in hot water will cause it to turn
out like a jelly. Doctor Edward Martin
recommends as follows
1st Sulphuric Acid 1/2 drachm. Water 7/2 drachms
2nd Chlorate of Potash 1 scruple, Water 1 oz [ounce].
3rd Solution of Chlorinated Soda 1/2 dram, Water 1 oz [ounce].
RIGHT PAGE
183
Horse power of Engine
Multiply together the area of the
pistion in inches, the pressure in
pounds per square inch, the length of
the stroke in feet, and the number of
Horse Strokes per minute and divide by 33000
power Example. Cylinder 10 1/2 inches diameter,
of 2 feet stroke (that is the Culinder is 2 feet
an long) 60 #bs [pounds] Steam, 80 Revolutions per
Engine minute.
[long hand math]
Answer 25, 190 Horse power
the above is not correct because 80
revolutions is 160 strokes per minute
The result should be doubled
August 2 1872
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Glue from Cracking
Glue To Keep glue from Cracking owing to
a dry room, add a little chloride
of Calcium to the glue
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