4 KANSAS UNIVERSITY QUARTERLY. 
In the first column of figures is given 
the sum of the distances at which records were made. 
ject in the four positions. 
ANisitio, IE 
(b) Pitch Pipe. 
(a) Telegraph Snapper. 
Dis. |) Re. |B. Av Gen. Ay. 
i} 
A eaters 171.2 A 240 5 205.8 
Brae 2a0.1 Bie 329.2 281.4 
Oeeo.ce BoLue C 3.2 383.7 
Ds 265.0 D D2 260.6 
E. ae) eG 2 306.2 
ioe Al ir ab 317.1 
Gr. off, G fh 288.2 
Eis 2 niet an) 276.1 
cae Gee 0 I 3) 313.7 
Wietan sieve 2 Re 46) 329 3 
Ke 0 Ix .2| 294.6 
| Oieeeesrc DI I, AY) 374.2 
INS. Ae. 0 M .2| sBt9'6 
NUS: silt N at 308.2 
Ow 0 OR Seay 2 239.1 
Peer 5 p 9] 309.2 
Qu: 2 Q “| 291.9 
Ress 283.0] £. 2) 297.6 
s 233.0) NS) 1.2 270.1 
Et ee oes: 242.3 aD eee 2] 212.7 
From this table we deduce the following, which shows the num- 
ber of subjects who gave respectively correct estimates, over-esti- 
mates and under-estimates: 
R | ee F | B. | Total. 
C.|+ |— |}C.|+|—|/C.; +|—C.| +] —]]C.|+ | 
S| sal —| = | re | | —. | a 
(a) Tel. Snapper... 10, 10 eg 9 | ia 14 | oe |e 1 1 | 4% | 82 
(b) Pitch Pipe...... 15 | 5 Ia (rape a | 16 | Cl Geel 05.) 75y | ea a eae 
Two subjects—C and J—-made a complete record of over-esti- 
mates. The two correct averages were made by different persons. 
Subject A made a record of under-estimates in (a), but made an 
over-estimate in (b). Subject F made no under-estimates, but 
made a correct average in (b). The number of persons making 
over-estimates was the greatest when sitting with the face toward 
the sound. The number making under-estimates was the greatest 
when the right side was toward the sound. The latter position 
also favored the equal division between those making under-esti- 
mates and over-estimates. The number who over-estimated the 
distance was greater in every position in (b) than in the corre- 
sponding positions in (a). In general the number who made over- 
estimates was much greater than that of those who made under- 
estimates. 
The averages of the estimated distances are given in the follow- 
ing table: 
