Dal e-] 180 [January 3, 



Rogers and N". S. Shaler have expended time and thought upon 

 it, and their writings on the subject form a considerable literature, 

 as may be seen from the following list. 



Chas. T. Jackson. Report on the Geol. and Agric. Survey of the State 

 of Rhode Island, made under a Resolve of Legislature in the 

 Year 1839. Providence, 1840. 



Edward Hitchcock. Final Report on the Geology of Massachusetts. 

 (Pages 532-554.) Amherst and Northampton, 1841. 

 " Report on Certain Points in the Geology cf Mass. 



(Contains a map of the Bristol and R. I. coal-field.) State 

 document, Boston, 1853. Abstract of this in Am. Journ. of 

 Science, 1853. Vol. xvi, n Ser. p. 327, entitled: The 

 Coal-fields of Bristol Co. and of R. I. 



W. B. Rogers. On the Causes which gave rise to the Generally Elon- 

 gated Form and Parallel Arrangement of the Pebbles in the 

 Newport Conglomerate. Proceedings Boston Soc. Nat. Hist. 

 Boston, 1859. 



Ch. H. Hitchcock. Geology of the Island of Aquidneck. 



" Synchronism of Coal-beds in the New England and 



Western United States Coal-basins. Proceedings Am. Asso- 

 ciation for the Advancement of Science for 1860. Cambridge, 

 1861. 

 " Geological Map of Aquidneck, or the Island of 



Rhode Island. Presented by the City of Newport to members 

 of the Am. Association for the Adv. of Science. Aug. 1, 1860. 



W. B. Rogers. On the Recent Discovery, by Mr. Norman Eastop, of 

 Fossils in the Conglomerate of Taunton River. Paper read 

 before the Am. Association for the Advancement of Science 

 in 1860, but only published by title. 



Edward Hitchcock. On the Conversion of certain Conglomerates into 

 Talcose and Micaceous Schists and Gneiss by the Elongation, 

 Flattening and Metamorphism of the Pebbles and the Cement. 

 Am. Journ. of Science, Vol. xxxi, n Ser. 1861. 



Holmes and Hitchcock. Sixth Annual Report of the Secretary of the 

 Board of Agriculture of the State of Maine. (On Newport 

 Conglomerate, p. 178.) Portland, 1861. 



N. S. Shaler. On the Geology of the Island of Aquidneck and the 

 Neighboring Parts of the Shores of Narraganset Bay. 

 (Extracted from a report to Benj. Peirce, Supt. of the U. S. 

 Coast Survey.) Art. I, Topography; Art. II, Glacial De- 

 posits and Ice Marks; Art. Ill, Physical Condition of the 

 Carboniferous Time. Am. Naturalist, Vol. VI. (Pages 518, 

 611 and 751 respectively.) Salem, 1872. 



