166 



PROCEEDINGS OF THE AMERICAN ACADEMY. 



mounted on a boi and giving International (French) pitch, with which 

 the last-mentioned fork can be compared. 



In Table IV. are given the rates of a number of small musicians' forks 

 loaned l»y Mr. L. K. Fuller, which were sold in L892 as representing the 

 i.rw "International Pitch." The attached letters, M, .V 0, denote the 

 different dealers who furnished them. It will be seen that the C 4 forks 

 range from, approximately, 516 to 520 vibrations, 1 1 » * - true value being 

 517.;'> vibrations, and the A ; forks from 12 1 to 198 vibrations, the differ- 

 ence in the latter cast- amounting to over a major tour, and showing 



an extreme of carelessness in tuning and comparison that is aim 

 incredible. 



TABLE Y. 



Tonometer Forks. Valentine and Carr. 



Ratings have also been made of forks selected at random from several 

 tonometers. In Table V. will be found the results of measurements upon 

 fork- from four tonometers by Valentine and Carr. The forks are all 

 of the small pattern ordinarily used by that firm. The numerals 1, 2, 3, 

 4, 5, beading the corresponding columns indicate the particular set of 



