PART in. THE CYCLE OF A YEAR. 21 



But as the year's range of monthly means of tempera- 

 ture amounts only to 12*2 at Madeira, to 21*6 at 

 Lisbon, to 29*0 at Jerusalem, and to 207 in Scotland, it 

 results that summer monthly means are much higher in 

 Jerusalem than in Madeira or anywhere else almost as 

 high in Lisbon, and only decidedly lower so far north as 

 Scotland. 



On the other hand, winter monthly means put Madeira 

 once again into a most enviable position, for while her 

 lowest month averages 60*4, Lisbon's lowest is so low 

 as 49*5, Jerusalem's 47*2, and Scotland's only 36'8. 



While next, taking the mean daily range of the mean 

 temperature throughout the year, and finding it at 

 Madeira only 9*2, but at Lisbon 14*2, at Jerusalem 

 1 8 '7, and even in Scotland 12*4, we may state that any 

 one may expect, in the middle of the hottest month, to 

 have an average noonday temperature of no more than 

 77-0 in Madeira, but 78*2 in Lisbon, and 85-6 in Jeru- 

 salem (Scotland being 637); while the average mid- 

 night temperature in the coldest month of the year will 

 be in Madeira no lower than 55*8, but in Lisbon 42*4, 

 in Jerusalem 37*8, and in Scotland 30*6. 



Wherefore equability of temperature comes out as 

 marked a feature for Madeira, throughout the cycle of a 

 year, as it did before for the cycle of a day ; and if the 

 reason why be again demanded, we have once more to 

 inquire of invisible 



