CLIMATE, Sec. 



and on this occasion he mentions facts that deserve 

 to be noticed.* 



Reaumur. Fahrenh* 



At Rutland, in Vermont, 

 he found the temperature 

 of wells, at the depth of 



45 feet . . ,. 5 1-4 deg. 44 deg. 



In different places in Mas- 

 sachusetts . . 7 1-2 49 



At Philadelphia . 9 1-5 53 



In Virginia, according to 

 Mr. Jefferson,! it is • 11 



At Charlestown, according 



to Dr. Ramsay, it is • 14:f 63 



In this table we see a gradation proportionate to 

 the parallels of latitude, which agrees with the ex- 

 periments of Mr. De Saussure, to refute the old doc- 

 trine of a mean temperature of 10 degrees through- 

 out the globe, and to i)rove, that the heat of every 

 place is in the ratio of the latitude, or more precisely 

 of the action of the sun on the ground, to which heat is 

 imparted by its rays. 



The daily vaauations are greater and more abrupt 

 on the Atlantic coast, than in Europe. 



The excessive variations on the Atlantic coast, 

 are not confined to the seasons ; they take place iike- 



* History of Vermont, p. 42. Mr. Volney might have referred to 

 the elder authority ot Kirwan for the idea of determimr.g the point 

 .i)y the heat of wells. 



•f- See Notes on Virginia, p. S3. 



4 Humboldt found the eanie degree in South Americaa 



