24 



Classification of RocTcs. 



UPPER CANADA. 



Table of the Geograjphical distribution of the Formations in the 



several counties. 



Note. — These Tables have been compiled from the valuable reports made to the 

 Legislature by Mr. Logan, of the progress of the Geological Survey of 

 the Province, under his charge. It is understood that he is about publish- 

 ing, or has published, a Geological Map of great beauty and excellence. 

 In the last number of Silliman's Journal, it is stated that this map will be 

 the best cA'er executed of any part of America. It will be of the greateaH 



