This section is from the book "Cassell's Cyclopaedia Of Mechanics", by Paul N. Hasluck. Also available from Amazon: Cassell's Cyclopaedia Of Mechanics.
A celestial globe, the varnish of which has become chipped, is renovated as follows. Cleanse by gently rubbing with soft flannel and white curd soap, and wipe perfectly dry with clean chamois or window leather. Wipe over any scratched portions with the least possible raw linseed oil: then, if necessary, touch up defective portions with white hard spirit varnish or transparent paper varnish. Using a camel-hair brush, apply rather thinly to avoid the appear-ance of overlapping.
 
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