110 II. A. Hazen— Air-pressure at High Stations. 



gradually increased to three p. m. of the fifteenth, and though 



steady fall in pressure at Denver, yet it rose on 



Pike's Peak until seven a. m. of the fifteenth: from this point 



under the influence < 

 le cold wave reduced 

 not reach its minimnr 



forty hours later tli£ 



