Researches on the rhythm of speech. 
rl9 
which is rhythmically free (reading scansion, Table LIX. ) was about 3% 
higher than that in a corresponding set of records of English prose, the 
reading of which is rhythmically free (32°]0, Table LXIV.). When 
the scansion or reading is natural, artistic and rhythmically free, the 
complex-centroid intervals are only slightly more regular in poetry than 
in prose. 
The most regular coordination of the intervals in prose (e. g., C. O. 
S., Table LXIV. ; and Table LXX.) was superior to the coordination in 
many records of poetry. 
The most regular coordination in poetry occurs in routine scansion ; 
it is never perfect. The lowest percentage in seventeen records was 4% 
(Table LXII. ; E. H. T.£). Beating the time with the finger in¬ 
creased the regularity about three and a half times. 
The intervals in the most regular scansion of poety were about six and 
one-half times more regular than in the most regular reading of prose. 
Excluding the record of routine scansion with regulative concomitant, 
this is reduced to one and six-sevenths. 
The coordination in doggerel and in the most regular specimen of 
reading scansion, was about equally good (19%, O. S., Table LXI., and 
E. W. S., Table LIX.). In routine scansion it was about twice as reg¬ 
ular as this (9%, Table LXII.). 
In sing-song scansion it was slightly poorer than in doggerel scansion, 
but better than in reading scansion in general. Reading scansion repre¬ 
sents the highest degree of irregularity of any form of scansion. 
The test records of the verses of Tennyson and Browning indicate 
that the highest regularity in reading scansion occurs when the intervals 
consist of a uniform mode of composition or the same number of 
syllables (cf. Tables LXVII. and LXVIII. ). The difference in the regu¬ 
larity of the renderings of the tests is small. The absence of the punc¬ 
tuation marks did not decrease it. 
The range of irregularity for the records of a given number of per¬ 
sons will be about 0.27s (from 0.02s, routine scantion, Table LXII. to 
0.29s, reading scansion, J W. R., Table LIX.), or 38°jo (0.04 to 0.42, 
reading scansion, Japanese poetry, I. M., Table LX.). The range for 
the averages of the sets was 25% (from 9%, routine scansion, to 34%, 
verses of Browning read as poetry, Table LXVII. ) ; and for the same 
persons repeating the same selections 7 <jc (from 1 <Jo to 8%, in both cases, 
J. M. T.). 
With a standard of 10% of inequality, the complex-centroid inter¬ 
vals are rhythmically coordinated in about 6% of the records of poetry 
and in none of those of prose. % With 15% as the standard none of the