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fust Published by the direction of His Excellency Sir FREDERIC M. HODGSON, 

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A MAP OF THE NORTHERN PORTION OF BRITISH GUIANA. 



Showing the Geology of the courses of the principal rivers and of the auriferous areas, 



and with the latest topographical details. 



It comprises the results of recent geological reconnaissances under the direction of 



T. B. Harrison, C.M.G., M.A., F.G.S., Government Geologist, British Guiana, 



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Scale : 10 miles = i inch. 



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THE GEOLOGY OF THE GOLDFIELOS OF BRITISH GUIANA. 



By J. B. Harrison, C.M.G., M.A., F.I.C., F.G.S., Director of the Department of 

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With Historical, Geographical, and other Chapters by Frank Fowler, Com- 

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 governing the Mining Industry. 



In addition to chapters dealing with the General and Descriptive Geology of the 

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 the Placer Deposits, the Origin of the Placer Gold of Guiana^ and the Diamantiferous 

 Areas of British Guiana. 



Illustrated with 33 photogravures and 20 Micro-photographs of sections of typical 

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