1880.] NATURAL SCIENCES OF PHILADELPHIA. 291 



The second stratum of lignite is the best, and contains fragments 

 of lignite sometimes three feet long. A number of fossil plants have 

 been found in this and other laj-ers. Some specimens were im- 

 bedded in a Isiyev of brown sandstone. The fossils appear to be 

 fragments of trees, grasses and other land plants, none of Avhich, 

 however, were sufficiently perfect to be determined. No shells 

 were found. 



The whole section at Berzelia is rem.irkabl}- similar to those at 

 Brandon, Chambersburg, Ironton and Marble Hall, and with them 

 indicates the existence of a great inland fresh water Tertiar}' for- 

 mation in Eastern America, during the Brandon Period, once 

 fifty miles broad and nearly a thousand miles long. 



