Office of the Chief Siernal Officer, 



UNITED ST A TBS ARMY. 

 Cfaftnsd from Actual Observations taken Simaltaneonsly. Series commenflnj October. 18TT» 





[SOBABS AM' ISOTHERMS. 

 iromet* 



in EogUsll i 



■ 

 ■ 



INTERNATIONAL MONTHLY CHART. 

 Showing 



. m time, for the i u 

 on the dally charts of thel 



