224 ANNALS NEW YORK ACADEMY OF SCIENCES 



104. Van Hise, 0. R. : A Treatise on Metamorphism. U. S. Geol. Surv., Mono- 



graph 47. 1904. 



105. Walling, W. A. B. : Some Notes on the Setting of Cement. Chem. News, 



104, 54. 1911. 



106. Weston, R. S. : Effect of Sewage on Concrete. (Letter.) Eng. Record, 



61, 714. 1909. 



107. White, A. H. : Disintegration of Fresh Cement Floor Surfaces by the 



Action of Smoke Gases at Low Temperatures. Pr. Am. Soc. Test. Ma- 

 terials, 9, 530. 1909. 

 10S. White, A. H. : Destruction of Cement Mortars and Concrete through Ex- 

 pansion and Contraction. Proc. Am. Soc. Test. Mat., 11, 531. 1911. 



109. Wig, R. J. : The Effect of High Pressure Steam on the Crushing Strength 



of Portland Cement Mortar and Concrete. Proc. Am. Soc. Test. Mat, 

 11, 580. 1911. 



110. Williams, I. A. : Influence of Fine Grinding upon the Physical Properties 



of Portland Cement. Trans. Am. Cer. Soc, 10, 244. 1908. 



111. Withey, M. O. : A Survey of the Concrete Aggregates of Wisconsin. Con- 



crete, 12, 55. 1912. 



112. Wormseb, D. : Changes in the Strength of Portland Cement. Cement Age, 



9, 254. 1907. 



