KEY MAR 



EXPLANATION. 



The. Daily andMeatuMonJJily charts iti, this volume are based on. daily obset-vation.t r, 

 the above chart, in addition, to those received from ,SVup,s- or the Ki'yal A<uv ami M 



The red. and blu^ Lines on the churls of Mean/ Monthly, and formal. Air Ttmprratiire art Isnthtrmjs or iinr.v of 

 EqiuiLAir Temperature , The lilies in red relate to thermometer readings ol* 3S'fnhr or n/imr- t)n>*e in //>* ftp 

 readings of 30 Fahr. and below. 



The red. and blue lines on the Dail\, Mean. Monthly, and Normal rl< '-rs.turt are Ifotarx <v knrs offfial 



Barometrif Pressure . The lines in red relate to ooj-ometer readings of 29 7ins or aJkm-t. Aase in blur r<. r-, ,,,i,n^a 

 of 29-6 ins. arud below. The words "lligti'and Low" on, tlie Daily charts are introduced. -where pressure i. htyhrxt. or 

 Lowest in, antic^'clones and depressions respectively Figures in black refer r t < . 'he as-rc* 



Wind,. The latter fly -with the wind, the force of -which-. given in numbers of the BeOMJ LS shc*n . follv**- 



G Calm.,-*! u>,3, > 4 to 6,c=>7 A ,=^ 9 & W,m+H &>Z . 



