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UM'I.M'ATION OK 'I'HK THKORV OK 



rve food will probably produce larger fruits than one 

 where the fruits are at the ends of long branches. In the 

 la 1 1 er ease it is quite conceivable that growth might be checked 

 by difficulties of translocation of food to the growing fruit and 

 i bus even when temperature and water supply were favourable 

 the growth might not be at all rapid. On the other hand a 

 fruit which is in close proximity to reserve will presumably 

 be able to take advantage of all periods when the environ- 

 ment is favourable to growth, since lack of food supply or 

 difficulty of translocation will rarely or- never occur. 



It seems significant in this connection that of three species 

 of Artocarpus in Ceylon, A. integrifolia, A. incisa, and A. 

 nobilis, by far the largest fruits are produced by A. integri- 

 folia. which is cauliflorous while the other two are not. This 

 fact is of course no proof of the suggested biological advantage 

 of eauliflory but is at any rate in harmony with it. 



The following measurements of the fruit of Artocarpus in- 

 tegrifolia were taken morning and evening by passing a piece 

 of thin copper wire round a fixed axis. The fruit is roughly 

 ellipsoidal and the circumference was measured round both 

 the Longest and shortest axes. The results are given in ems. 

 of growth per twelve hours. 



Table IV 

 Artocarpus integrifolia frail «( Penult uiya. 



