220 
LOCK : THE GROWTH OF 
Table II.— contd. 
Inter - 
node. 
a. 
b. 
c. 
d. 
Inter¬ 
node. 
a. 
b. 
c. 
d. 
24 
512 
562 
537 
552 
12 
513 
510 
500 
499 
23 
; 523 
550 
5 58 
570 
11 
502 
492 
495 
491 
22 
! 520 
577 
542 
543 
10 
481 
524 
460 
467 
21 
539 
550 
557 
532 
9 
453 
486 
450 
461 
20 , 
543 
575 
536 
• 503 
8 
444 
503 
425 
448 
19 
547 
539 
529 
495 
7 
435 
464 
400 
435 
18 
531 
565 
503 
482 
6 
430 
462 
365 
410 
17 
541 
523 
495 
489 
5 
397 
406 
330 
387 
16 
528 
557 
485 
510 
4 
375 
384 
270 
355 
15 
525 
511 
495 
523 
3 
324 
343 
250 
325 
14 
505 
538 
510 
527 
2 
290 
250 
190 
260 
13 
53 
497 
515 
516 
1 
150 
120 
150 
220 
It will be seen that starting from the base of the culm 
the internodes at first increase rapidly in length. The 
maximum length is reached at about the 20th to the 30th 
internode, and from this there is a gradual falling off right 
up to the apex of the culm. 
It thus appears that there is a close general agreement 
between the grand period of growth and the period of the 
length of internodes. As will be seen later on the 
differences in growth are greater than the differences in 
length of segments here recorded, and would seem to 
depend mainly on other factors. 
The total height of the four culms was as follows:— (a) 29*7 
metres, (&) 30*94 metres, (c) 33*3 metres (109 feet), ( d ) 28*6 
metres. The circumference a metre from the base of a was 
62 cm., of b 67*5 cm., of c 61 cm., and of d 57 cm. 
From each of the culms measured the actual extremity 
had been broken off either before or during felling, but not 
more than 1 or 2 metres was missing in either case. 
The steady sequence of increasing and decreasing length 
is broken here and there by minor irregularities. When 
there is a very marked break in the sequence, as occurs 
fairly frequently, there is often evidence that the young 
