240 
LOCK : THB GROWTH OF 
Table XIII .—contd. 
In the month of June in Ceylon there is a moderately 
rapid change from light to darkness and from darkness to 
light at about 6 p.m. and 6 a.m. respectively. The first 
signs of light begin to appear a little before 5.30 A.M., and 
by 6.30 P.M. darkness is nearly complete. Turning now 
to the curve of growth it will be seen that during the day 
the rate of growth is low though somewhat variable. In 
the evening the curve rises rapidly and reaches a maximum 
soon after dark. During the night the rate of growth 
remains high and fairly constant. At daybreak it falls 
again rapidly. 
The variations of growth during the day show a marked 
parallelism with changes of weather. Thus the evening 
of the 22nd was dry and fairly sunny, on the 23rd the 
