Agreeable to a register kept at Council Bluffs during the 

 month of January, 1820, the highest and loAvest temperature at 

 that place were, respectively, 36° and 22°, the month giving a 

 mean of 17.89. Compared Avith the observed temperature, for 

 the same month, at the folloAving positions in the United States, 

 both east and Avest of the Alleghanies, the Missouri Valley reveals 



