Dr Forry on the Climate of the United States. 229 



being, at Fort Trumbull, respectively 20°, 10°, and 16°, and at 

 Council Bluffs, 4°, 13°, and 11°. On the other hand, it will 

 be found that the vegetables which can endure the rigorous 

 climate of Council Bluffs will flourish more vigorously than 

 in the region of Connecticut ; for at the former the vernal in- 

 crease is 27° 47', and at the latter only 11° 67'. Moreover, 

 the latter increase is added to a winter temperature of 39° 

 33' ; while the former, added to 24° 47', more than doubles 

 itself, the influence of which upon the sudden development of 

 vegetation has already been pointed out. Those relations, as 

 developed in the tabular abstracts appended to the author s 

 work on « The Climate of the United States, and its Endemic 

 Influences," might be traced out much farther. At Council 

 Bluffs the extreme of temperature in summer is also much 

 greater than at Fort Trumbull, the mean maximum of the 

 former being 104°, and of the latter 87° ; and, consequently, 

 the annual average range stands respectively as 120° to 78°. 

 In addition to these facts, it may be observed, that so far as 

 elevation is concerned, that of the lakes being 600 feet, and 

 that of Albany only 130 feet above the sea, the advantage of 

 the comparison is, at first view, on the side of the latter ; but 

 this gradual elevation, it has been shewn, exerts no percep- 

 tible influence. 



Does the climate of our north-western frontier resemble that 

 of the Eastern States on their first settlement? 



This question, it is ti-ue, has already been decided in the 

 negative ; but as changes of climate in the New World also 

 are alleged by Jefferson, Volney, Rush, and Williams, to have 

 supervened, it may be well to make some inquiry into its 

 truth. It is deemed unnecessary to quote here the loose, 

 vague, and general statements of these writers, who thus as- 

 sert, that, on comparing the results of recent observations 

 on our frontier, with the best authenticated accounts we have 

 of the climate of the Eastern States, in their early settlement, 

 a close similitude is found. The winters, it is said, have 

 grown less cold, and the summers less warm ; consequences 

 which are ascribed to the clearing of the forest, and the cul- 

 tivation of the soil. That the climate of the great lakes re- 



