CLIMATE. 



239 



A mean atmospheric pressure of 29/264 inches (reduced 

 to 32 F. and 45 latitude) for the latitudes between 6i° 

 and 64° 30' S., and for the time intervening between the 

 middle of December, 1892, and the middle of February, 

 1893, may be deduced from the values recorded by Bruce. 



._f. Isobars actually 

 — [ observed. 



Isobars based on 



theory. 



*** Direction of wind 



actually observed. 



*- Direction of wind 



based on theory. 



Map of the distribution of atmospheric pressure (in inches) and of the winds (after 



Murray — v. Haardt). 



The observations of Ross for the same latitudes, but 

 restricted to the space between 57 3c/ S. and 12 W., 

 indicate the similarly corrected value of 29*193 inches, but 

 for latitudes 65° to 71 S., and between 17° and 7 W., 

 only 28^949 inches. 



