OverviewMORTARSSpecifying Historic Materials: The Use of Lime--L. B. SICKELS-TAVES AND M. S. SHEEHANInvestigation of the Rheology and Microstructure of Hydrated Lime and Sand forMortars---A. B. ABELL AND Jo M. NICHOLSHigh Pozzolan Mortars and Stuccos---D. H. NORVM~'~RThe Effect of Acid Rain on Magnesium Hydroxide Contained in Cement-LimeMortar--s. BERMAN, D. DRAGE, AND M. J. TATEEmley Plasticity Testing: The First Steps to a Precision and Bias Statement--R. J. GODBEY AND M. L. THOMSONA Tradition ...