Mining becoming a scientific business--Initial mistakes in public companies--Self-styled mining experts--How articles of association are compiled--How directors and officials are chosen--The usual consequences--Remedies--State inspectors--Certificates for mine managers--Directors-- Specialists in various branches advisable--Qualifications of mine managers--Economic advantages of co-operation--Joint central extraction works--Folly of adopting untried new processes without full knowledge--Pertinent quotation--Warning to directors--Robbing mills--How prevented--Conclusion pp. 113-126 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 APPENDIX 1. SELECTED DATA FOR MINING MEN.