52 



THE CAKBONIFEROUS. 



Reptiles (Silliman's Journal, vol. xii., December 1876). T may add 

 a paper on Impressions and Footprints of Animals and Imitative 

 Markings on Carboniferous Rocks (Silliman's Journal, vol. v., 

 January 1873), and the description of the remarkable footprints of 

 Sauropus unguifer found in a quarry in Cumberland County."* It 

 would be impossible to give here even the substance of these several 



l^ig. 4. — PoviioH of Bark of Sigillaria Lorwaya7m, Dn., shoioinfj part of one of the 

 ■Bands of Fruit-scars, toJiich O'Cur at intervals ofafeiu inches on the trunk. 



Kones of Fruit-scars at (a, a, rt). (6) Leaf-scar enlarged. (c) Fruit-scar enlarged. 



contributions to palaeontology, but I may notice a few pohits likely 

 to be of interest to the general reader, or specially new in 

 geological science. 



In the Report on Fossil Plants above referred to, the .species 

 characteristic of the Lowest Carboniferous beds are defined and 

 separated from those of the Devonian below and the Millstone-grit 



* Geological Magazine, vol. ix. 



