﻿THE PHILIPPINE 



Journal of Science 



A. General Science 



Vol. II JUNE, 1907 No. 3 



THE ASBESTOS AND MANGANESE DEPOSITS OF ILOCOS 



NORTE, WITH NOTES ON THE GEOLOGY 



OF THE REGION. 



By Wakren D. Smith. 

 {From the Division of Alines, Bureau of Hcience.) 



contents. 

 Introduction. 



Field work. 



The area and people. 



Geography — Physical, 



Topography. 

 Hydrology. 

 Climatolgy, etc. 



Geology — General. 



Igneous. 



Metamorphism. 



The sedimentary formations. 



Correlations. 



Geology — Economic. 



Introduction. 



Asbestos, manganese, etc. 

 Prospecting and development work. 

 Transportation. 

 Labor. 

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