24 



TOPOGRAPHY 



The highest temperature observed was.... 87 F. in July 

 The lowest ditto ditto .... 43 F. in Feb. 



The mean max. for the period 67'6 F. 



The mean min. for ditto 60*56 F. 



Mean max. daily range ,, 10'72F. 



Mean average ditto 6'35 F. 



Mean min. ditto 2'85 F. 



The above results are to be understood as only 

 those of a very limited period ; many years of similar 

 observations will be required before we can arrive at 

 the real mean temperature of Gibraltar, but I hope 

 there is now a fair prospect of this being accom- 

 plished, instruments having lately arrived from 

 England upon my suggestion, for keeping correct 

 meteorological observations on the rock of Gibraltar. 

 The following Tables are drawn out with the view of 

 showing how the temperature of one year may differ 

 from that of another. 



Average Temperature for Five Years, from Major Tulloch's Statistical 



Report. 



N.B. The maximum was obtained generally from observations at 

 3 P. M., and the minimum from observations at 9 A. M. AUTHOR. 



