184 Reviews — Suess as Palceontologist. 



formed by oxidation and suj)ergene enrichment are native gold and 

 silver, argentite, polybasite, pyrargyrite, silver haloids, malachite, 

 zinc silicate, with carbonates, quartz, chalcedony, barytes, gypsum, 

 etc. An interesting feature is the evidence that has been found of 

 the existence of one or more ancient periods of denudation and 

 oxidation, at horizons now buried under subsequent deposits. The 

 ore-veins are regarded as replacements of the volcanic country 

 rock, now called the Mispah trachyte, and extending down into the 

 underlying rhyolitic series, both being of Tertiary age. In many 

 places the geological evidence is favourable to the persistence of 

 rich primary silver ores to depths considerably greater than any 

 yet reached, though hot ascending waters in the deeper workings 

 may prove troublesome. It may be noted that the occurrence of 

 such minerals as pyrargyrite, polybasite, and stephanite in a primary 

 zone is unusual. 



While not pretending to a high standard of culture in dead 

 languages, the reviewer ventures to enter a vigorous protest against 

 the employment of such a barbarism as the word " supergene ", 

 half Latin and half Greek. This is on a par with that journalistic 

 horror, " hypersensitive." Surely Anglo-Saxon, or, at worst, good 

 Latin terms can be found for such a simple idea as is here implied. 

 What is the matter with " secondary " ? R. H. R. 



Suess as Paleontologist. 

 TN the number of the Revue Critique de Paleozoologie for January- 

 -L April, 1919, which has just come to hand, M. G. F. Dollfus has 

 an excellent article on the completion of the French edition of 

 Das Antlitz der Erde. In it he discusses the palaeontological 

 work of Suess, and shows how it gradually led him on to those 

 wider tectonic studies for which, indeed, it formed the evidence and 

 the foundation. 



It may be mentioned that the price of M. Cossmann's useful 

 Revue has been raised to 12 francs per annum. 



South Australia Department of Mines, Mining Review No. 30, 



pp. 56. Adelaide, 1919. 

 rpmS report contains statistics concerning the mining industry 

 -*- of the State for the half-year ending June 30, 1919, and a 

 number of special reports on points of interest. The most note- 

 worthy feature of the period under review was the dislocation of 

 the copper industry, leading to the cessation of smelting at Wallaroo, 

 and almost complete stoppage of production. The development 

 of resources of non-metals continues to progress, and reports are 

 printed on deposits of barytes, whiting, graphite, and asbestos. 

 The production of iron ore at Iron Knob has now reached the 

 satisfactory figure of about 1,000 tons per day. The body of man- 

 ganiferous iron ore is now exposed in two open workings to a depth 

 of 100 feet, and the reserves are evidently very large. An interesting 



