Geology and Mineralogy. 141 



by friends or collected in the field, from Newfoundland through 

 Cape Breton, Nova Scotia, New Brunswick, and along the coast 

 of Maine as far as the Boston basin. Another more westerly 

 belt may be followed from Gaspe, through the Eastern Town- 

 ships to Vermont ; it appears again near Harrisburg and extends 

 at intervals along the whole extent of the Blue Ridge. The 

 eastern belt appears again in North Carolina, not far from 

 Raleigh and is nearly continuous across the State. (Author's 

 abstract). 



In the paper on The Shasta- Chico series of the Pacific Coast, 

 J. S. Diller described several measured sections of the Cretace- 

 ous in different parts of middle and northern California. He 

 demonstrated the stratigraphic and faunal continuity of the 

 Shasta-Chico series composed in California of the Knoxville, 

 Horsetown and Chico beds which attain a maximum thickness 

 of 30,000 feet (see this Journal, vol. xl, 1890, pp. 476-8). The 

 differences in the composition of the several sections was ex- 

 plained as due to transgression of the Cretaceous seas during the 

 deposition of the series. 



The geology of southern Indian Territory and northern 

 Texas adjacent to the Red .River, was described by Robert T. 

 Hill, showing the remarkable development of Cretaceous and 

 later formations in that region where the typical geographic feat- 

 ures of the southern gulf coastal plain, the Texas prairie region, 

 and the Appalachian structure of the Ouachita mountains meet, 

 and where their relations are seen. 



Mr. Hill showed the differentiation of the various formations 

 south and westward from this area, and gave a minute descrip- 

 tion of the Washita division of the Comanche series from the Rio 

 Grande to Red River, its faunal and sedimentary changes, with 

 the zones and hemera of its fossils. The Shoal Creek limestone, 

 capping the Comanche series south of the Brazos, was described 

 as having an entirely distinct fauna from that of the contiguous 

 beds — a fauna entirely new to the North American Cretaceous, 

 consisting of Foraminifera, Coelenterata and Mollusks. 



The speaker remarked upon the strong homotaxial resemblance 

 between the great divisions of the Texas Cretaceous formations 

 and those of western Europe, especially the Neocomian, Gault, 

 Turonian and Senonian, although presenting absolutely no simi- 

 larity to the beds of the pacific region. 



The author observed that the Duck Creek chalk and the Kiami- 

 tia beds contain the fauna described as Neocomian by Marcou, 

 who was the first to recognize the early Cretaceous age of what are 

 now known as the Comanche series. (From notes by the author). 



G. H. Williams called attention to a work written by 

 Johann David Schoepff, an almost forgotten contributor to the 

 geology of this country in the last century. His book, dated 

 1787, " Beitrage zur Mineralogischen Kenntniss des ostlichen 

 Theils von Nord Amerika," is full of very good observations 

 made between Rhode Island and Florida, especially in the Appa- 

 lachians of Pennsylvania, Maryland and Virginia. 



