516 CLAYS AND CLAY INDUSTRY. 



Ladd, George; E. A Preliminary Report on a part of the Clays of 

 Georgia. 

 Geol. Survey of Ga., Bull. No. 6-A, Atlanta, 1898, 199 pp. 17 pis. 



' Notes on the Cretaceous and Associated Clays of 



Middle Georgia. 

 Amer. Geol., vol. XXIII, Minneapolis, 1899, pp. 240-249. 



1 Clay, Stone, Lime and Sand Industries of St. Louis 



City and County. 

 Geol. Survey, Missouri, Bull. No. 3, Jefferson City, 1890, pp. 5-83, 3 pis., 2 

 maps. 



LangenbECk, K. Chemistry of Pottery. 

 Chemical Pub. Co., Easton, 1896, 197 pp. 



Lesley, J. P. Some general considerations respecting the origin 

 and distribution of the Delaware and Chester Kaolin de- 

 posits. 



Ann. Rept. Geol. Survey Pa. for 1895, Harrisburg, 1896, pp. 571-614. 



Loughridge, R. H. Report on the Geological and Economic 

 Features of the Jackson Purchase Region. 



Geol. Survey, Ky., Frankfort, 1888, pp. 84-118. 



McCaeeEy, Henry. Report on the Valley Regions of Alabama 

 (Paleozoic Strata) : Clays. In two parts. I. The Tennessee 

 Valley Region. 

 Geol. Survey, Ala., Montgomery, 1896, p. 68. 



■ Ibid. II. The Coosa Valley Region. 



Geol. Survey, Ala., Montgomery, 1897, PP- 84-86. 

 Meade, D. W. Manufacture of Paving Brick. 



Trans. Amer. Soc. Civ. Eng., vol. XXIV, 1893, p. 552. 



Montgomery, H. G. Manufacture of Glazed Brick. 



London, 1894. 



Orton, E., Jr. The Clay- Working Industries of Ohio. 



Ohio Geol. Survey, vol. VII, pt. 1, Norwalk, 1893, pp. 69-254. 



Pennock, J. D. Laboratory Note on the Heat-Conductivity, 

 Expansion and Fusibility of Fire Brick. 

 Trans. Amer. Inst. Min. Eng., vol. XXVI, New York, 1897, pp. 263-269. 



