CH. IV. EQUABLE TEMPERATURE. 89 



A few of the results here stated in Fahrenheit's scale 

 are derived from M. Beaumier's tables as continued to the 

 end of 1874 :— 



Mean temperature during eight years = 66.9° 



Do. for the hottest year (1867) = 68.65 



Do. for the coldest year (1872) = 66.75 



Mean of the annual maxima = 82.5 



Mean of the annual minima = 53-0 



Highest temperature observed = 87.8 



Lowest temperature observed = 50.7 



More striking still is the comparison between the tem- 

 perature of summer and winter. The following results 

 show the monthly mean temperature, derived from eight 

 years' observations : — 



[-June = 70.8 



Summer .....< July = 71.1 



LAugust = 71.2 



r December = 61.4 



"Winter , . . . .s January = 61.2 



iFebruary = 61.8 



showing a difference of only 10° of Fahrenheit's scale 

 between the hottest and coldest months. It has not been 

 possible to ascertain accurately the daily range of the 

 thermometer, as there were no self-recording instruments 

 employed ; but there is reason to believe that this would 

 exhibit a still more remarkable proof of the equability of 

 the climate. So far as the observations go they show an 

 ordinary daily range of about 5° Fahr., and rarely ex- 

 ceeding 8° Fahr. It may be added, that in the course 

 of six weeks from our arrival on April 26 to our de- 

 parture on June 7, the lowest night temperature observed 

 at Mogador was 61° Fahr., and the highest by day 77° 

 Fahr. 



If the climate of Mogador be compared with that of 

 such places as Algiers, Madeira (Funchal), and Cairo, 

 which have nearly the same mean winter temperature, it 

 will be found that in each of those places the mercury is 

 occasionally liable to fall considerably below 50°, and that 



