20 MADEIRA METEOROLOGIC. PART in. 



to begin a discussion of the four places mentioned, viz. 

 Madeira, Lisbon, Jerusalem, and Scotland, as follows, 

 for 



THE CYCLE OF A YEAR IN VARIOUS LOCALITIES. 



Pressure and Temperature. 



In the matter of mean barometric pressure for the 

 year, the three southernmost of the above stations are 

 very much alike, being all nearly two-tenths of an inch 

 above 30 inches, while the northern station is half a 

 tenth below. 



Again, all the stations without exception have greater 

 ranges of pressure in the winter than in the summer 

 months ; but the mean monthly range for the year is 

 twice as great at Lisbon as it is in either Madeira or 

 Jerusalem, and twice as great again in Scotland as it is 

 at Lisbon ; whence we may conclude that Jerusalem is 

 far enough east, and Madeira far enough south, to be 

 out of the track of the severest of the south-western 

 winter storms of the Lisboan, and still more of the 

 British, seas. 



In the very important matter, in the next place, of 

 mean temperature for the whole year, Madeira is facile 

 princeps, registering 66*2 against 63*4 for Jerusalem, 

 60 'o for Lisbon (a deficiency explained by its being 7 

 of latitude to the north), and 46*3 for Scotland, which 

 is 1 7 of latitude farther north still. 



