ALABAMA AND MISSOURI. 407 



lied log of wood, out of which whetstones and hones, 

 could be made, in the Mandane region. 



This outline of North American geology is, I am sen- 

 sible, very imperfect. Further observations will be re- 

 quire4 to fill up the picture and finish it by proper co- 

 louring. These, as they occur, may be arranged in their 

 places, and contribute to the excellence and beauty of 

 the piece. 



With the acquisition of facts from a wider field, the 

 composition may be enlarged. Things which lie beyond 

 the limits of my survey will be introduced. In process 

 of time, it may be expected, that the whole scenery be- 

 tween the Caribbean and the Frozen seas, and between 

 the Atlantic and the Pacific oceans, will be introduced. 



When this object shall be accomplished, our contri- 

 bution to the geology of the globe will be respectable. 

 It may be added to the intelligence concerning South 

 America, laid before the learned world by Baron Hum- 

 fooldt and others. 



Conclusion. 



I have forborne to refer any of these great changes to 

 epochs in time. Chronological dates and historical re- 

 cords do not reach far enough back to answer all the 

 purpose. Viewing the face of the earth as I do, some 

 conception may nevertheless be entertained of the syn- 

 chronism and succession of the respective formations. 

 Let us take them in the inverse order from that which 

 was stated in the introduction to this Essay. 



