6(5 FOURTH RKI'ORT — 1834. 



for the want of a sufficient knowledge of the structure and su- 

 perposition of our formations ; and, above all, the importance 

 of pursuing our geology free from the shackles of a nomencla- 

 ture originally adapted to another continent, — render it desi- 

 rable that we reject the terms in use, and appropriate to this 

 group of formations a name which shall be independent of old 

 associations, and yet express their position in the geological 

 series. 



