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ECONOMICAL USE OF Coal TAR.-This ar
tlcle, which can generally be purchased in
Cape Town, at very moderate price, may
without much trouble, be converted into
valuable pigment, preferable, in many ms
tances, to oil paints, for wood or iron work,
exposed to the action of the weather. Take
"a quantity quick lime, and having added
as much water as will reduce it to the state
of a powder, pass it through "a sieve; then
take quantity of coal tar, and mix it with
the powdered lime, to the proportion of pint
of the former to IA gallon of the latter. Too
much should not be mixed at once, as when
in a few hours 1t would, itnot used, become
thick. When wanted for ornamental pur-
poses, several colours may be formed in a
very cheap and simple manner--for instance
an invisible green may be produced by mix
ing powdered yellow ochre with the lime and
tar, and chocolate colour by Spanish brown.


A most excellent and cheap roof for cot
tagcs may be made by applying two or three
coats OF the above mixture on common
thatch, and then throwing on the last coat
while wet, dry sand, which forms mass i'm
pervous to water, and Of great durability.
For out-oflices and small buildings make "A
horizontal wooden floor, with joints, which
may be so light as merely to support the
operators weight upon them. Cut guam
nifty of coarse brown paper into slips above
two inches broad, and with brush do over
the joints Of your floor with the mixture, and
on this lay slips OF paper; lastly cover the
paper with the same composition. You are
now to be provided with large iron boiler,