192 GEOLOGICAL SURVEY OF THE TERRITOEIES. 



instrumental in developing the present state of things and in giving us 

 the country as it is now found. Some conclusions touching such points 

 were briefly suggested when the facts upon which they more directly 

 depended were described. By considering together many of the facts 

 thus separately presented, more extended and interesting conclusions 

 may be arrived at, but the facts are confined to too small an area, and 

 are as yet too isolated to afford reliable data for generalization, and as 

 this is not the place to collect facts from other sources and regions, the 

 temptation to draw general conclusions as to the former history of the 

 district is resisted. 



ARCH. E. MARYINE. 

 June 19, 1874. 



