Stainless steel objects, such as cutting blocks and trial prostheses, should be kept more than 10 cm from EM-CAS instruments to minimize error.

1553,(1) vividly describes some of the difficulties experienced by different individuals when they attempt utterance or the attack on the sounds which constitute vocal expression." Musicians in Englade have used, to put gagges in childres mouthes, that thei might pronounce distinctly, but now with the losse & lacke of Musicke, the love also is gone of bringyng up children to speake plainlie. Some there bee that either naturally, or through folie have suche evill voices, and suche lacke of utteraunce, and suche evill gesture, that it muche defaceth all their doynges. One pypes out his woordes so small, through defaulte of hys winde pipe, that ye would 1 This piece of work is somewhat shriveled from age and neglect but for various reasons I desire to contribute it to this particular volume. No account of it has been published previously. Objective studies on the attack in singing are very few. I undertook this work the next year, 1914, after securing my Ph.D. degree in Psychology under Professor Seashore. It was a cooperative study with my first major student in psychology, Mr.