CONTENTS 



HEISE, GEORGE W., and BERRMAN, A. S. Water analysis 



in the field ...........„.....^,.. ...,...._.„.: .„„.. ..„.-.„...„:..^ 1 



BEHRMAN, A. S. Two field methods for the det^nnination of 



the total hardness of water. ,.,.^ 21 



WITT, J. C. Some generalizations on the influence of substances 



on cement and concrete :.:.... 29 



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