Likeliest localities for reefs--Similarity of indications of minerals--Where first prospecting is done--A practical example--Ironstone “blows”--Their true origin--Igneous theory untenable--Usual trend of lodes in Australia--Exceptions to the rule--Instances of rich deposits apart from lodes--Sinuosity of lodes--How to trace lodes demonstrated--Examine all indications--How to recognise gold, silver, copper, tin--How to ascertain their value--Caution in sinking--Where to prospect in case of parallel lodes--Usual underlie in Australia--Size of prospecting shaft--Tip for mullock--How to distinguish gold from pyrites or mica--Estimating value from prospect--How to pan--An amalgamating assay method--Author’s device when antimony present--Battery, best test--Silver and tin indications--Lode tin, stream tin, difficulty of recognising tin--Lode tin always near granite--Minerals often mistaken for tin--How to discriminate--Tin in Westralia pp. 22-33 CHAPTER IV THE GENESIOLOGY OF GOLD (AURIFEROUS LODES) Igneous theory formerly strongly upheld--Quotation from Rosales--His arguments combated--Hydro-thermal action--Its evidences in New Zealand--Professor Lobley’s theory--Author’s deposition theory confirmed--Later works--Conclusions of Le Conte--Metamorphic slates and earlier Silurian strata theory--Format ion of mineral lodes--What was gold originally?--Metal or metallic salt--Silicate hypothesis preferred--Explanation of sulphides and silicates of gold--Bischof’s interesting experiment--Skey’s and other deposition experiments--How gold took its metallic form--The Comstock lode--Occurrence of gold in shutes explained--Why lode junctions are usually rich--Cox’s theory--Instances of lodes re-forming--Gold as natural sulphide--Newbery’s theory of gold in pyritous lodes--Probable occurrence in pyritous ores as sulphide pp. 34-47 CHAPTER V THE GENESIOLOGY OF GOLD (AURIFEROUS DRIFTS) Derivation and occurrence--Old diggers’ “growing” theory--Deposition experiment illustrating nature--Denudation of quartz lodes theory--Examples of its probability--Nuggets require other explanation--Deposition, most rational theory--Usual alluvial theory combated--Daintree’s and Wilkinson’s deposition experiments--Spondulix and Lothair nuggets--Newbery’s deposition experiments--Nugget form explained--Author’s experiments in manufacture of golden quartz--Extract from author’s “Deposition of Gold”--Remarkable nugget--Reason of superiority of alluvial gold pp. 48-58 CHAPTER VI GOLD EXTRACTION