[CHAPTER XI]
[RULES OF THUMB]
Living places—A bush bed—Northern Territory hammock—Purifying water—To obtain water from roots—An effective filter—Canvas water-bag—Medicine case—Producing fire—To copy correspondence—Simple telegraphic code—A serviceable soap—To cross a flooded stream—To make a hide bucket—To make a “slush lamp”.
pp. 127-139
[CHAPTER XII]
[RULES OF THUMB]
[(MINING APPLIANCES AND METHODS)]
A temporary forge—Making charcoal—Rough smelting on the mine—Misfires in blasting—To prevent loss of rich specimens in blasting—Simple retorting of small quantities of amalgam—Simple mode of ascertaining nominal H.-P. of engine—Scaling copper plates—How to supply mercury and water to mortar-boxes—Power for mills—To avoid loss in cleaning up—Iron extractor—To silver copper plates—How to make a dolly, rough windlass, puddler—A makeshift pump—Squeezing amalgam—Sluice plates—Measuring inaccessible distances—To set out a right angle with tape—Simple levelling instruments—Levelling by aneroid barometer—To determine heights—To find depth of shaft—Plan for re-using water—Cooling compound for heated bearing—Cleaning greasy plummer blocks—An excellent anti-friction compound—To clean brass—A solvent for rust—To protect iron and steel from rust—To keep machinery from rusting—Fire-lute—Rope-splicing.
pp. 140-166