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THE 



JOURNAL 



OF THE 



COLLEGE OE SCIENCE, 



IMPERIAL UNIVERSITY OF TOKYO, 

 JAFAN. 



VOL. XVII. 



I M ^' I iC I fP fî 

 PUBLISHED BY THE UNIVERSITY. 



TOKYO, JAPAN. 



1901—1903. 



MEIJI, XXXIV— XXXVI. 



