BY R. 11. CAMBAGE. 



687 



siderable elevations, of say, 200 feet or upwards, rising above 

 the plain, then such elevations produce trees. The inference is, 

 therefore, that there is some difference, either chemical or physi- 

 cal, between the soils on the well drained hills, and the soils of 



Text-tig. 2. 

 Buds of Eiiralypftt.s dea/hafa enlarged by dipteious laivie. 



the lowland; and it may be that, even though the geological 

 formation is the same from which the soils of hill and valley are 

 originally produced, certain salts are leached out from the high 

 land and carried down to the lower, thus differentiating the 

 characters of the two soils. 



