466 



PROCEEDINGS OP THE AMERICAN ACADEMY. 



mounted on a box 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 by Mr. L. K. Fuller, which were sold in 1892 as representing the 

 new " International Pitch." The attached letters, M, N, O, denote the 

 different dealers who furnished them. It will be seen that the C4 forks 

 range from, approximately, 516 to 520 vibrations, the true value being 

 517.3 vibrations, and the A3 forks from 424 to 498 vibrations, the differ- 

 ence in the latter case amounting to over a major tone, and showing 

 an extreme of carelessness in tuning and comparison that is almost 

 incredible. 



TABLE V. 

 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 

 forks 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, heading the corresponding columns indicate the particular set of 



