Scottish geographical magazine . ica, Cape Town, environs of Johannesburg, FRANgAISE. Atlas Universel de Geographie. No. 42 ter. Hachette and Co., London. AUSTRALIA. QUEENSLAND, Geological Map of . Compiled by Robert L. Jack, , , Government Geologist. 1899. Scale 1 :1,013,760, or 16 miles toan inch. 6 TOWERS GOLDFIELD, Map of —. Geological lines by R. L. Jack andA. Gibson Maitland. Scale 4 chains to an inch. 6 sheets. 1898. Presented by the Queensland representative, Greater Britain Jack, with the aid of his assistants, and by carefully
Scottish geographical magazine . ica, Cape Town, environs of Johannesburg, FRANgAISE. Atlas Universel de Geographie. No. 42 ter. Hachette and Co., London. AUSTRALIA. QUEENSLAND, Geological Map of . Compiled by Robert L. Jack, , , Government Geologist. 1899. Scale 1 :1,013,760, or 16 miles toan inch. 6 TOWERS GOLDFIELD, Map of —. Geological lines by R. L. Jack andA. Gibson Maitland. Scale 4 chains to an inch. 6 sheets. 1898. Presented by the Queensland representative, Greater Britain Jack, with the aid of his assistants, and by carefully collecting the obser-vations of a large number of authorities, has compiled a geological map of thecolony far more complete than the edition of 1892. In some parts new outcropshave been discovered, and in others specialisation has been carried further. Theoutcrop of the Blythesdale Braystone, so important as a source of water supply, ishere defined. v/ o I n *j \j 30 20 .^ CHINDEEP MOWING THE DEEPS ACCORDING TO SIR JOHN MURRAY. THE SCOTTISH GEOGK-APHICAL MAGAZINE. ADDRESS TO THE GEOLOGICAL SECTION OF THEBRITISH ASSOCL\TIOX, 1899. By Sir Archibald Geikie, , , , President ofthe Section. Among the man} questions of great theoretical imiiortance whichhave engaged the attention of geologists, none has in late years awakenedmore interest or aroused livelier controversy than that which deals withTime as an element in geological history. The various schools whichhave successively arisen—Cataclysmal, Uniformitarian, and Evolutionist—have had each its own views as to the duration of their chronology,as well as to the operations of terrestrial energy. But though holdingdifferent opinions, they did not make these differences matter of specialcontroversy among themselves. About thirty years ago, however, theywere startled by a bold irruption into their camp from the side of were then called on to reform their ways, which were declaredto be flatly opposed t
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