i?A*HoLYOKE's Ustmale of the Excess of Heal and Cold. 



G7 



taken collectively, wliicli is 88°. 1, deducted from the mean 

 of our greatest heat, which is 97°. 02, leaves a difference of 

 8°. 92 hotter. And the mean of the greatest cold of these 

 cities, being + 25°. 96, taken from the mean of our greatest 



cold. 



2°. 42, gives a difference of 28°. 38 colder. 



The 



of Amer 



then, in our latitude, is hotter in 



summer (when hottest) by 10 degrees of Fahrenheit's the 



mometer*, and colder 



(when coldest) by 5 d 



than the whole middle region of Europe taken collectively, 

 whose mean latitude is about 49° or SiT", that is, about 7 or 8 

 degrees more northerly than Boston. 



summer, by up- 



A 



a 



the air of America is hotter in 



ards of 8 deg 



and colder in 



by 28 dc 



o 



than those parts of Europe, which lie nearly in the same latl 

 tude.f 



PART II 



HERE then 



very notable difference in respect both of 



heat and cold, in two tracts of 

 joy the influence of the 



our globe, which equally en- 

 that prime source of heat to 



ystem J and it is much greater, I believe, than any one 



would 



imagine 



wh 



had not attended to obser 



of 



naturally leads to an inquiry into the 

 cause of so remarkable an excess; for this cause still re- 



this kind : which 



mams 



% 



* I have all alon;: made use of Fahrenheit's scale, as bebg much more famUiar to us 



than Reaumur's. 



t As these three cities, taken together, He a degree or two northward of us, the result 



here civen is ratlicr less, than the true. 



