74 



THE BOTANICAL MAGAZINE. 



tVol. XXVI. No. 3l«. 



From these |-esults we see that the weight of the friuts in 

 the upper branches exceeds those of the lower branches as in 

 the case of A. hibitat. Also in C. hibitat we see that the mean 

 number of the vesicles in the upper part is greater than that 

 of the lower. But it is clear, as the observations of A. habitat 

 show, that such a case is only exceptional and depends on the 

 environment of the tree. From the above results we can also 

 see that the annual difference of vesicles is larger than that 

 of the lower and the upper fruits in the same year. 



Next I shall show the results of B. habitat. On 5th Nov. 

 1909, 535 fruits were collected from a Fukuremikan tree of 

 about 4- m high. 



The data are : 



As to local variations of vesicles I here tabulate them as 

 follov^s : 



As far as my observation goes, the local variation is not so 

 great as the annual variation in the same tree. It may there- 

 fore be well conjectured, that the number of vesicles is not easily 

 influenced by climatic and edaphic conditions, less especially by 

 the latter, and so it seems to be of a fixed character. As re- 

 gards the climatic influence my results are quite iusuffioient, 

 because the variation of vesicles in Southern Japan is quite 

 iinobserved. 



