LOCK: THE GROWTH OF 
Table II.— contd. 
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 intemodes. 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, ( b ) 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 
