174 GEOLOGICAL SURVEY OF THE TERRITORIES. 



For a complete list of the fossils found at this locality I refer to Pro- 

 fessor Meek's report. 



Layeis 10 and 11 probably represent the entire extent of the Carbon- 

 iferous beds. IsFo, 1 should probably be referred to the Huronian series, 

 while No. 2, I believe, represents the Potsdam grouj), or at least a por- 

 tion of it. From No. 3 to No. 9 includes the remainder of the Silurian 

 beds. The section given above was made with all the care possible in 

 the limited time ailbrded. More extended observation will no doubt 

 result in the discovery of new organic forms and the more accurate de- 

 termination of the age of the various beds. We followed up the East 

 Gallatin River, reaching Bozeman on the 15th of October, when^the 

 expedition disbanded for the season. 



Fig. 43 shows the relations of the various springs on Bear Kiver, 

 which were described in the report of 1871. These springs were de- 

 scribed by Fremont in 1843, and called the Beer Springs, from the 

 agreeable taste of the water. 



