NATURE [September 28, 1905 



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THE LIFE OF WILLIAM EWART GLADSTONE. 



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A TREATISE ON CHEMISTRY. 



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THE GEOLOGY OF SOUTH AFRICA. 



By F. H. HATCH, Ph.D., M.Inst.C.E., President of the Geological Society of South Africa: and 

 G. S. CORSTORPHINE, B.Sc, Ph.D., Consulting Geologist to the Consolidated Coalfields of South Africa. 



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By MAJOR A. COOPER-KEY, H.M. Inspector of E.xplosives. 

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ELEMENTARY TRIGONOMETRY. 



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SIMPLE LESSONS ON HEALTH 



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MACHINE CONSTRUCTION and DRAWING 



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