123 
Researches on the rhythm of speech. 
Table LXXXIII. 
( Prose read as 
poetry) 
Subject. 
a 
p 
a 
e 
c 
S. I. 
0.46 
0.07 
0.15 
+0.70 
—0.32 
+ 
0. E. S. 
o-53 
0.13 
0.24 
+ 0.90 
— 0.21 
+ 
Av. 
0.49 
0.10 
0.19 
Table 
LXXXIV. 
(,Summary 
of simple-centroid intervals of speech) 
Table. 
a 
p 
p_ 
a 
LXXVI. 
0.47 
0.06 
0.13 
LXXVII. 
0.47 
O.II 
0.23 
LXXVIII. 
0.41 
0.08 
0.19 
LXXIX. 
0.41 
0.09 
0.23 
LXXXII. 
0.42 
0.08 
0.19 
LXXXIII. 
0.49 
0.10 
0.19 
Av. 
0.44 
0.08 
0.19 
Unit of measurement, Is. 
a, average duration. 
p, immediate probable error. 
e, extreme intervals, 
c, character of greater extreme. 
n, number of intervals. 
p 
, relative immediate probable error. 
a 
Results.—Eight hundred and twenty-three measurements were made. 
The duration of a given simple-centroid interval of speech will pre¬ 
sumably lie somewhere between 0.14s (J. M. T., Table LXXVIII.) and 
1.12s (J. W. R., Table LXXII.), a range of about 1 second. The range 
for the averages of a given series of records will be about of this (from 
0.30s, C. O., Table LXXX., to 0.63s J. W. R., Table LXXII.); and 
for those of different sets, about i (from 0.34s, verses of Browning read 
as poetry, to 0.54s, sing-song and doggerel scansion). The highest 
range for the selections repeated by the same person was 0.06s (C. O.); 
the lowest, 0.01s (J. M. T.). For the complex intervals J. M. T.’s 
range was the highest ; here it is the lowest. He seems most irregular in 
his pauses. 
The longest average for any set of prose records was 0.49s (Table 
LXXXIII.); for poetry, 0.54s (Table LXXIV., sing-song and doggerel 
scansion). The shortest for poetry was 0.34s (Table LXXX., Browning 
verses). The longest average for any record was 0.54s for prose (prayer,