Vol. XVII, Article 8. 



Ä Ïtî <f> HI Jz &> Ä5 



Wfc + **? ist W n fâ 



THE 



JOURNAL 



OF THE 



COLLEGE OE SCIENCE, 



IMPERIAL UNIVERSITY OF TOKYO, 

 JA.FAJST. 



II t I i: I PP It 



PUBLISHED BY THE UNIVERSITY. 



TOKYO, JAPAN. 



1902. 



MEIJI XXXV. 



