14 PROCEEDINGS OF THE PHILADELPHIA MEETING . 



the accuracy of certain of his deductions lias recently hecn proved in the 

 discovery of large bodies of very valuable nickel ores in the township of 

 Levack by explorations whiih were carried out by the company at points 

 indicated by Doctor P)arl(»w. This work on tlie co})])er-nickel ores of the 

 .Sudbury region was continued for the (Jeological Survey of Canada, and 

 it is not too much to say that his report on the nickel and copper deposits 

 of Sudbury has now l)ecome a classic in the literature of ore deposits. 

 It was Doctor Barlow who first established the claim of these remarkable 

 ore bodies to be considered as of magmatic origin. About this time the 

 writer was requested bv Dr. (ieorge M. Dawson, tlien Director of the 

 Geological Survey of Canada, to undertake the mapping and detailed 

 study of a large area of the Grenville Series in the Haliburton and Ban- 

 croft districts of eastern Ontario, and as the work developed Doctor 

 Barlow was associated with him. This region was geologically an abso- 

 lutely virgin field, but it had an area of 4,"i00 square miles, and it Avas 

 necessary to make a topographical survey to secure a map on which the 

 ucolo^ical sti'uctiires of the resriou could be shown. Doctor Barlow's 

 ability as an cxccllciil io|togra])her. as well as a kccJi geologist, and his 

 indefatigable energy contributed largely to the successful completion of 

 this work, the i-esult of which a])i)e;i red in the (Jeology of the Haliburton 

 and Bancroft Areas, jiuMished by the Geological Survey in 1910. Among 

 the results obtained from the study of this region was the discovery of 

 great bodies of nepheline syenite occurring about the border of the in- 

 truding granite l)atholiths and presenting manv i'<Mnarkable variations in 

 composition, some \arieties being rich in coiunduni, which were subse- 

 quently made the basis of an extensive industry for the exploitation of 

 the mineral. 



Doctor Barlow served on several im[)or;ant c()nnnissions. One of these 

 was that ai)pointinent by the Dominion government in 1905 to report on 

 the zinc resources of British Columbia. Another was the commission 

 appointed by t!u' government of the Province of Quebec in 1910 to report 

 on the resourc-es of the Chibougamau District in that province. This is 

 situated in northern Quebec, on the eastern prolongation of the great belt 

 of pre-Cambrian rocks on which farther west the great mining camps 

 of Cobalt, Porcupine, and Sudbury are found. IJeports of the mineral 

 richness of this region had been brought in by various explorers and the 

 government Avas being urged to vote a large sum for the construction of 

 a railroad into this remote region for the purpose of making these sup- 

 posed mineral deposits accessible. The commission, with Doctor Barlow 

 as chairman, after maldng a thorough study of the region, reported 

 against tlie construction of the railrond. Ibns nol only presenting a large 



