1. In this investigation I was assisted by Paris T. Carlisle. 4th, and by Miss Martha C. Borton. To both of these I am greatly indebted for the care with which they looked after the numerous experimental details and records of some thousands of tests the routine measurements for which were made as a rule, by young women who were trained specially for the duties assigned to them.
2. This term is here used to mean the per cent, of mercury in an amalgam. See p. 517.
3. The Influence of Temperature upon the Crushing Strength of a Dental Amalgam;Gray;Rochester meeting. Phys. Rev.,1918
4. The Influence of Amalgamation Variables upon the Mercury Content and the Crushing Strength of a Dental Amalgam;New York meeting. Phys. Rev.,1918