Office of tlie Chief Signal Officer, 



UNITED STATES ARMY. 

 Charted from Actual Observations taken Simultaneously. Series rommtntlli( October. 1S77. 



phi \ An.iNd warns 



Arrow* thowi il»« direction of, and ii\ with, the wind 

 Puree l« -in'wii iu follow* 



v^ 



Mii.v per Metre* dpi 

 hour, wooMi 



> — »• 



t ».] 



i .« 



8.J 4.1 10 1H 1 



2i.a to «'.:• 

 :. - to. mom.:. 



9, Id 67. ti U)>. 



1'1'ULISIIKU BV OKDF.K OK TUB 



BRUJ. OR.V. (BVT. A88UU) CH1E 



L NT KK NATIONAL MONTHLY CHART 

 18.1 to w.i Showing me:in pressure, mean temperature, mean for.-i- and prevailing dinoUmi «•( vrlnoji 

 80.2 4 over. " v M ■ Washington mean time, for the month of August, ifi7l. b:v*cd 



.•» Lhfl daily eliarte of the International RullPtin 



ISOBARS AND ESOTHKRMS 



Isobar* in blue . detached barometer mean 

 n KnglUh i" 



iHothfrniri id rM; detached lemperator 

 neans in degree*. Fahrenheit 



