PREFACE. 



The object of this pamphlet is to set before the Geo- 

 graphic Societies of the Old and New Worlds the compre- 

 hensive work which has been accomplished during the past 

 forty-five years by the indefatigable subject of this sketch, 

 whose innate modesty has hitherto kept him from exploiting 

 his own remarkable achievements, which cover well-nigh 

 one-half of this Northern Continent. Fiat justitia. 



C. H. 



Washington, 



February , /go/. 



