io MADEIRA METEOROLOGIC. PART 11. 



station ; and for so indirect or feeble an influence on 

 human feelings or powers of perception as small varia- 

 tions of barometric pressure in themselves, that is prob- 

 ably quite enough. But when we come to temperature, 

 which is so direct and universally appreciated a charac- 

 teristic of climate, we must be far more particular. 



Now in Madeira the mean temperature for June 

 comes out 68* i Fahr., on which by itself we can say 

 little more than that it is a very comfortable temperature 

 indeed, almost the exact quantity indicated by the 

 Great Pyramid as being the central temperature for all 

 human kind during the whole human intellectual period 

 of their trial domination, past and future, upon the 

 earth. And if the mean temperature for the same 

 month in Lisbon is only 65*0, that may be easily attri- 

 buted to its more northern latitude. 



But in July, when the thermometer mean in Madeira 

 has risen from 68* i to no more than 69*6, the same 

 element in Lisbon has so far surpassed it, both differen- 

 tially and absolutely, as to have risen from 65*0 to 73*1; 

 or the progress of a month, in place of being 1-5, has 

 actually mounted up to 8'i; constituting a sort ot 

 dynamical phenomenon necessarily endued with the 

 most intense influences. 



Take the mean daily range of temperature, for 

 instance. Throughout June in Madeira it was the 

 strangely small and mild quantity of 6*5, while in 

 Lisbon it had the stirring force of 17*3; and though 



