SHUTT: EXPERIMENTS IN JUDGING THE DISTANCE OF SOUND. 3 
judgments and the under-estimates. In part (b) of the table it 
exceeds the sum of the other two, as it does also in the general 
average. 
Table II shows the maximum and minimum errors made at each 
distance in the four positions. 
ABER ne 
(a) Telegraph Snapper. 
Dis R Tio) | Otel lPke Sse as ee oie 
| bere a SEA ENE aM sew aoa (| 
Heel eat eee ee ee ee 
- a — | = = = | ee 
5 Gy He 1 alle Se |e 1 | 13 1 12.2 i 
10 yg ae 10 St alibe te 4 10 a en MB 
} 219 10 5 15 i 25 ape ae) 5 17.5) be 0 
| 20 15 5 15 |» 10 I ah) a 5 15,0))|) (785 
25 15 7 ie tOS alter e13 15 9 14.0| 9.7 
30 15 | 12 25 | 10 20 | 16 HSE) LON) Hin doe te |e 220 
| 35 TLS Wy 16 Pee at 15 | 21 10} jerds 14.0 | 16.7 
| 40 8 , 20 TSP 1% 10 | 23 10) } hee 11.5 | 20.5 
| 45 Balin 2p eth 14 ey ae: Bp Oa 5.0 | 22.9 
| DE ieee 0 || eee S280) |i eecese | 29 So 6 Doe} | tows 26.2 
Ropaliyeeeaeeee 1D 109 | 123 120 | 113 120 | 145 1if | 113 || 116 6 |124.6 
(b) Pitch Pipe. 
Divers) eh ds, |g ee 8: Av. |iGen. Av 
x mes | IErieia eae hes || eae 
Rt.| + |= || + t= | +1 SS ee 
=| ook | See eae = || ——|— 
5| 23) 1D ie tease eas | ell a5 elas, ll erate ke 
10} 30} 5 || 40| 2 | 40] 8 || 40) 3 |] 87.5) 32 |) 246) 3.4 
ASOLO! We Shp nk Seer 35005 337 | 172 Pall (Beal 
20) 30) 2°8 3 24. 30 851-30 8 30.0 | 12.0. 22 5 9.7 
2 | 25] 5 |, 20] 13 |) 20] 10 || 25/ 13 || 22.5) 102 || 18.2] v9 
30} 18} 15 || 20) 15 || 15110 |} 20 | 10 || 15.7 | 12.5 |) 15.7 | 12.2 
35 | 15420 || 15 | 10 || 10/45 |] 15] 15 |) 13.7 | 15.0 |) 13.8) 15.8 
40 | 10| 10 || 10] 15 |! 10} 30 || 10 | 15 || 10.0 | 17.5 || 10.7 | 19.0 
45 | 10| 30 || 5 | 20 Bilton alee) 6.2-|-22.5 5.6 | 22.2 
2 eames eal Fae es eg | Er ae a ire oe 
Rapa ees! 191 [116 || 315 133 |) 200 |133 || 225 |i14 |( 205 0 |123.5 |! 160.6 |123.2 
In (a) the sum of the maximum errors is the same with the left 
side and the face towards the sound, and is greater in those posi- 
tions than in the other two. The sum of the minimum errors is 
the greatest with the face towards the sound. In part (b) of the 
table the sum of the maximum errors 1s the greatest with the back 
towards the sound, and that of the minimum errors is the same and 
greatest when the left side and face were turned towards it. The 
sum of the averages of the maximum errors is greater in (b) than 
in (a). The sum of maximum errors exceeds that of the minimum 
errors in the general average. 
The next table contains the sum of the judgments of each sub- 
