— 15 — 



Geology, palaeontology — Continued. 



Laphara, I. A. (Devonian in Wisconsin). 1:4 $2.00 



Linton, M. L. (Impression in sandstone;. 1 : 1* 



Litton, A. Belcher & Brother's Artesian Well. PI. V. 1:1* 



Lyon, S. A. Descriptions of four new species of Blastoidea, from 



the Subcarboniferous rocks of Kentucky. PI. XX. 1:4 " 



Remarks on the stratigraphical arrangement of the rocks of 



Kentucky, from the Catenipora escharoides horizon of the 

 upper Silurian period, in Jefferson County, to the base of the 

 productive coal measures in the eastern edge of Hancock 

 County. 1:4 " 



Marcou, J. (Age of geological formations). 1:3 " 



Notes on the geology of Kansas and Nebraska. 1:4 " 



(On the Dyas in Nebraska). 2:3 " 



On the Terebratula Mormonii. 3:2 " 



McAdams, W. (Drift fossils at Jerseyville, 111.). 3:2 " 

 (Drift fossils from Illinois). 4:3 " 



McGee, W. J. Notes on the geology of Macon county, Missouri. 



PI. IX. 5 : 1-2 4. CO 



Norwood, J. G. (Rocks of Illinois). 1 : 2* 



Potter, W. B. (Geological relations of the ore deposits of Mis- 

 souri). 4 : 4 2.00 



Prout, H. A. Description of a new species of PvoducLus, from the 

 Carboniferous limestone of St. Louis. PI. II. 1:1* 



Description of a new species of Bryozoa from Texas and New Mexico, 

 collected by Dr. George G. Shumard, geologist of the U. S. 

 expedition for boring Artesian wells along the 32d Parallel, 

 under the direction of Capt. John Pope, U. S. Corps Top. 

 Eng. 1 : 2* 



Descriptions of new species of Bryozoa. 2:2 " 



First of a series of descriptions of Carboniferous Bryozoa 



1:2* 



Second series of descriptions of Bryozoa from Palaeozoic rocks 

 of the western States and Territories. 1:2* 



Third series of descriptions of Bryozoa from the Palaeozoic rocks 



of the western States and Territories. Pis. XV-XVIII. 1:3. " 



Fourth series of descriptions of Bryozoa from the Palaeozoic 



rocks of the western States and Territories. 1:4, " 



(Fossil tooth from Abingdon, Va.). 1 : 4 



New Bryozoa, mostly from the Falls of the Ohio). 1 : 3 



Schmidt, A. On the form and origin of toe lead and zinc deposits 

 of Southwestern Missouri. 3:2 



Shumard, B. F. (Base of Cretaceous in northern Texas). 1 : 4 



A catalogue of Palaeozoic fossils of North America. 2 : 2 



(Coal measures in northern Texas). 1:4 



Cretaceous formation of Texas). 2 : 1 



Description of a new fossil Crinoidea from the Palaeozoic rocks 



of the western and southern portions of the United States. 

 PI. I. 1:1* 



a 



* Exhausted. 



