Frazer. ] 534 [April 5, 
record or of different sound-records, according as the loudness of the sound 
and the consequent extent of the excursion of the stylus enabled that por- 
tion of the instrument to clear the surface of the foil during the rapid 
revolution of the cylinder. 
According to any reasonable hypothesis, the light vowel sounds and the 
long or heavy vowel sounds should bear a general resemblance to each 
other; but the latter should be more completely run together. This ap- 
pears on the record. 
It was intended to take casts of the depressions in gelatine or Canada 
balsam, in order that all parts of the solid forms may be examined at once, 
but naturally the shape of the depressions have only a secondary bear- 
ing on the subject since they are result of the dragging down by the stylus 
of the yielding lead paper in passing over a mathematical line. 
Different substances or the same substance at different temperatures 
would naturally produce casts of entirely different character. 
The following are some measurements of the lengths and widths of some 
of these forms. The depth was not measured : 
A (Ah) 
Mitlimeters. 
ING 6o55a06600 5006 5.187 (Mean of six measurements. ) 
Bread thys.20c nie si asie<fiiote 0.532 40 es 
Distance apart... <j... 0.606 sc) -sevien wis 
E (ay). 
Millimeters. 
Length 1st of couple.......... { Mean of three 
(large end on left)..... 7.8416 © measurements. 
2d of couple 
(large end on right).... 
6.916 (Mean of three 
measurements. ) 
< eilstrottcouplesmsceist 1.2078 Be 
(Small end on right).... 
Se COMO la COMp leat sreietierere 
(Small end on left). 1.2078 ef 
Bread thine cs a-cusiscie stone eecre 0.266 to 0.798 — 
Distance apart of small ends.... 0.798 Mean of three 
measurements. 
ss of darceyend ie. «cri 0.2881 Mean of six 
measurements. 
I 
Millimeters. 
Length of depression ee of three 
oe MVE Chea faye ayclcusioxs ae ieete 2.4738 © observations. 
fs Body 6.916 sf 
Eaverynesty lomennoliliyn sQaay eso oad 3.38416 ‘ 
DISIANCOMAD ATM sete ceeeloeere 1.862 Mean of three 
measurements. 
