EXPLANATIONS OF THE ABBREVIATIONS IN THE 

 TABULAR COLUMNS. 



AUTHORS. 





B. Professor Buckland. 



F. Professor Featherstonhaugh. 





C. " Conrad. 



L. 



Lyell. 



Br. 



British Isles. 



L. C. 



Lower Canada. 



Oh. Ohio. 



Con. 



Connecticut. 



Mam. 



Mammalia. 



Penn. Pennsylvania. 



Eng. 



England. 



Mass. 



Massachusetts. 



Rep. Reptiles. 



Ea. 



Europe. 



Mar. 



Marine. 



R. I. Rhode Island. 



Ft. 



France. 



Me. 



Maine. 



St. I. Staten Island. 



F.W 



. Fresh Water. 



N- Am. 



North America. 



Scot. Scotland. 



Ger. 



Germany. 



N. Eng 



New England. 



S.Am. South America 



Ire. 



Ireland. 



N. H. 



New Hampshire. 



Ten. Tennessee. 



Ky. 



Kentucky. 



N.J. 



New Jersey. 



Vt. Vermont. 



EXPLANATION OF THE TABULAR COLUMN. 



Pages 81, 83, 85 & 87. 



The next first four pages of Table I, form one column and is in an as- 

 cending series, beginning at the bottom of page 87, No. 1, Granite, (which 

 was considered the lowest rock, by the older Geologists,) then going up 

 the series and back to page 81 to the Diluvium, No. 53, which represents 

 the top, the four pages taking in all the series and formations ; but it will 

 be seen on page 85 there are numbers from la to 7a which is an innova- 

 tion, I was forced to make to bring in the Silurian Rocks, for until lately 

 these rocks were called Transition Limestone and Graywacke, (which 

 are represented by 19 and 20, page 85,) and they were not divided into 

 sections until Mr. Murchison undertook the task. 



