C. K. Wead—Intensity of Sound. 187 
n, an e 
.mean of the values of z observed when he shouted “out.” 
Nearly all through the scale the observer Y, who is a musician, 
showed a higher sensibility than the others, whether the wind 
was toward him or from him. : 
TABLE V. - 
1 2 3 4 5 6 7 8 9 10 
50 ft. 100 ft. 200 ft. 300 ft. 
Fork. | Obs. : 
No. obs. 2 \No, obs.| z \No.obs.| 2 No. obs. z 
zi } 
Ut,-| ¥ ios: )s4) fee 
7. 5 3°9 5 7-0 | 
E 5 3°65 4 7:0 
G 5 4° 5 70 
: 3-3 70 
Ut, | Y 1 Polls 4) Ber ae Ese 
7 1 15 4 2'5 
E le 1 1S 4 24 4 3°7 
"OS | 25 33 
Sol, 3's | 12 
6 | 18 
E ‘ 6 rb 
i 5 
Ue -¥ 12 | 0 
T 8 191 
20 
Sol, | ¥ 6 | 15 
r 6 16 
16 | 
Ut, e's  § ‘T0) 
T 3 15] 
TG | 
tacitly made by Rayleigh* in his oft-quoted experiment 
 *Proc. R. S., xxvi, 248. | 
