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THE CARBONIFEROUS. 



Reptiles (Silliman's Journal, vol. xii., December 1876). I 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 

 Sauriipus unguifer found in a quarry in Cumberland County.* It 

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



Fig. 4. — Portion of Baric of SigiUuria Lorwayana, Dn., showing part of one of the 

 Bands of Fruit-scars, which occur at intervals of a few inches on the trunk. 



Zones of Fruit-scars at (o, ft, a). (b) Leaf-scar enlarged. (c) Fruit-scar enlarged. 



contributions to palaeontology, but I may notice a few points 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 tlie Devonian below and the Millstonc-grit 



* (ii-iilogical Magazine, vol. ix. 



