DALY: PHYSIOGRAPHY OF ACADIA. 97 



Summary. 



The attempt has been made in the foregoing sketch to show, first, 

 that Acadian land-forms may be described in terms of two topographic 

 facets, each a nearly perfect plain of denudation, interrupted by in- 

 cised valleys and surmounted by residual hills ; secondly, that there 

 is evidence to show that the denudation was essentially subaerial and 

 referable to two chief cycles of geographic development. This evi- 

 dence, though not so complete, is of the same quality as that used in 

 the best extant treatments of similar facets in more southerly portions of 

 the Appalachian system. Finally, the following table will summarize 

 the very striking parallel which can be drawn between the physiographic 

 features of Acadia and New England. The similarity between the two 

 provinces is here expressed in terms of a theory of development, but the 

 homologies between the greater facets and the details of relief exist inde- 

 pendently of theory. Extending the comparison to the central and south- 

 ern Appalachians would from this standpoint of physiographic history 

 still further establish the organic unity of the whole system from Georgia 

 to the Gulf of St. Lawrence. 



