752 NEW YORK STATE MUSEUM 



Eichardson, C. Series of articles on lime and cement mortars. 



Brickbiiilder. 1897 and 1898. 

 Schoch., C. Die moderne aufbereitung nnd wertiing der mortel 



materialien. Ber. 1898. 



Smith, W. A. On cements, (see Min. ind. 1: 49)' 



Spalding, F. P. Hydraulic cement, its properties, testing and use. 



N. Y. 1897. 

 Stillman, T. B. Methods of testing cement, {see Jonr. chem. 



soc. 15: 181; 16: 161, 283, 374) 



Also has bibliography. 

 Wilkinson, P. Technology of cement plaster, (see Trans. Am. 



inst. min. eng. 37: 508) 



Zwick, A. Hydraulischer Kalk nnd Portland cement. Leipzig 



1892. 



