182 M. C. Ihiseng— Velocity of Sound in Wood. 
os ucing the low note. This is evident from the table given 
elow: 
Taste VII. 
Number of longitudinal and transverse vibrations corresponding to the high note. 
I 1 ilk ate pms 
No. 2, 1107°97 1068°29 38°68 
“13, 1227-21 1246-05 18°84 
Ssh 1326°59 1333°75 716 
42), Re G0 ee es pea 
‘21, 1733°89 1717°43 16°46 
ieee 1413-26 1391°80 11°46 
TABLE VIII. 
Number of longitudinal and transverse vibrations corresponding to the low note. 
Rod. Longitudinal =n. Transverse =7'. Difference. 
i oe a ieee 
No. 2, 1009-29 978°58 30:71 
peice BR 998°58 976714 22°44 
me a 1167 1162°54 5:08 
520; WOC8T Shire see a Sp 
ee 4 1332-04 1311-71 120°33 
ee 1115-66 1119-24 3°58 
in the ratios between N and n, or N’ and 7’ 
as 18 
? 
shown below; they however, in some cases approximate to a 
terz. era = 4: 
TABLE IX. 
fac 
Rod. Ratio $ Ratio 
eo Se 
No. 2, 1: 0-9109 1: 0°9161 secund = °888. 
4S. 0°8137 0°7834 terz = ‘8. 
ite | % 0°8802 08701 secund = ‘888. 
20, bocce 
: 21, 0-7682 0°7055 quart = 75. 
22, 07894 0°8041 terz °8. 
Columbia College, Oct. 25th, 1877. 
