GIANT BAMBOOS. 
229 
accompanied by a falling off in the rate of growth, as for 
example on July 1, 5, and 22, and on August 1 to 4 ; whilst 
heavy rain is accompanied by a marked increase of growth, 
as on June 28, July 15 and 30. The only exception was 
on July 8. On the whole the agreement is quite unmistak¬ 
able. 
The variations in rate of growth become more marked in 
the later part of the grand period than in the earlier, and 
they appear also in the later portion to show a more marked 
agreement with the curve of rainfall. 
Culm No. 2 grew at a distance of less than a metre from 
No. 1. Measurements were started on June 14—the halm 
being then little more than a metre high—and were dis¬ 
continued on July 17 at a height of 8*73 metres. The 
average growth during this period was 24*1 cm. per day, or 
10 mm. per hour. The less average growth of this culm than 
in the case of No. 1 is accounted for by the fact that an earlier 
portion of the grand period is included. The daily measure¬ 
ments are recorded in the second column of Table IV., and 
a portion of the corresponding curve is shown in fig. 1. 
This clearly illustrates the steady increase in rate of growth 
during the earlier part of the grand period. Like those of 
No. 1 the variations in rate of growth show a close agreement 
with the variations of rainfall. The greatest growth recorded 
in 24 hours was 370 cm. on July 15. 
Measurements of No. 3 began at a height of 45 cm. The 
whole of the growth recorded for this culm belongs to the 
earlier part of the grand period which is characterized by a 
gradual increase in rate of growth. Here again the daily 
oscillations of growth show a general agreement with those 
of rainfall. The total height reached in 35 days was 5*91 
metres, showing a rate of growth which agrees closely with 
that of Nos. 1 and 2 for corresponding parts of their grand 
periods. 
Records of the growth of No. 4 were continued only for 
17 days. A part of the curve obtained is shown in fig. 2, 
8(10)04 (13) 
