Canada balsam may be substituted for balsam of
copaiba where the smell of the latter is objectionable, but the ink
then dries very quickly. The red inks are similarly made by using such
pigments as carmine, lakes, vermilion, chrome yellow, red lead, orange
red, Indian red and Venetian red.
A Cement to Stick White Metal Tops on Glass Bottles.--One of the best
cap cements consists of resin, 5 ounces; beeswax, 1 ounce; red ocher
or Venetian red in powder, 1 ounce. Dry the earth thoroughly on
a stove at a temperature above 212i Fah. Melt the wax and resin
together, and stir in the powder by degrees. Stir until cold, lest the
earthy matter settle to the bottom.
The Correct Meaning of the Tonnage of a Vessel.--The law defines very
carefully how the tonnage of different vessels shall be calculated.
An approximate rule for finding the gross tonnage is to multiply the
length of keel between perpendiculars by the breadth of vessel and
depth of hold, all in feet, and dividing the product by 100. It is
generally assumed that 40 cubic feet shall constitute a ton, and the
tonnage of a vessel is considered to be the multiple of this ton,
which most closely corresponds with the internal capacity of the
vessel.
A Recipe for Re-inking Purple Type Ribbons.--Use: Aniline violet, 1/4
ounce; pure alcohol, 15 ounces; concentrated glycerine, 15 ounces.
Dissolve the aniline in the alcohol, and add the glycerine.
The Process of Giving a Tempered-Blue Color to the Steel Plate and
Malleable Iron Castings of a Roller Skate.
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