222 



CEMENTS, LIMES, AND PLASTERS. 



MARYLAND. O'Harra, C.'C. Cement industry in Allegany County. Report 

 on Allegany County, Maryland. Geol. Survey, pp. 185- 

 186. 1900. 



MINNESOTA. Upham, C. Report on Blue Earth County. Final Reports 

 Minn. Geol. Survey, vol. 1, pp. 415-437. 



NEW YORK. Bishop, I. P. The structural and economic geology of Erie 

 County, N. Y. 15th Ann. Rep. New York State Geolo- 

 gist, vol. 1, pp. 305-392. 1897. 

 Geddes, G. Survey of Onondaga County, N. Y. Trans. 



N. Y. Agric. Soc. for 1859, pp. 219-352. 1859. 

 Luther, D. D. The economic geology of Onondaga County, 

 N. Y. 15th Ann. Rep. New York State Geologist, vol. 1, 

 pp. 241-303. 1897. 



Pohlman, J. Cement rock and gypsum deposits in Buffalo. 

 Trans, Amer. Inst. Mining Engrs., vol. 17, pp. 250-253. 

 1889. 



Ries, H. Lime and cement industries of New York. Bulletin 

 44 N. Y. State Museum, pp. 640-848. 1903. 



OHIO. Bleininger, A. V. Manufacture of hydraulic cements. Bul- 



letin 3, Ohio Geol. Survey, 1904. 



Lord, N. W. Natural and artificial cements of Ohio. Reports 

 Ohio Geological Survey, vol. 6, pp. 671-695. 1888. 



VIRGINIA. Anon. James River Cement Company, Va. Engineer 



(London), Sept. 29, 1899. 



WASHINGTON. Armstrong, L. K. Portland and natural cements of the 

 Pacific Northwest. Mining, vol. 9, pp. 134-141. 1902. 



