CONTENTS 



Page, 



Letter of transmittal 9 



Introduction 11 



Methods of work 14 



Dog sledding : 14 



Camping 15 



Chronologic summary of operations 15 



Methods of scientific work , 17 



Itinerary and topographic methods, by W. J. Peters 18 



Plan of operations 18 



White Horse to Bergman 19 



Reconnaissance up Alatna River 20 



Reconnaissance up John River 20 



Canoe trip from Bettles to Point Barrow 21 



Methods of topographic work 24 



Previous explorations 25 



Historical sketch 25 



Chronologic list of works 31 



Population and conditions ^ 33 



On the Koyukuk 33 



Natives 33 



Whites 34 



Transportation and means of travel 34 



The placers 35 



On the Arctic coast : 35 



Natives 35 



Whites 36 



Transportation and means of travel ; 37 



Table of distances 37 



Geography 38 



Location and general features 38 



Mountain province : 39 



Endicott Mountains '. 40 



General features 40 



A ncient plateau feature of Endicott Mountains 42 



Drainage ; 43 



Koyukuk province 44 



General features 44 



Drainage 45 



3 



