»^ 



$^ W. ^ M :^ 



m :^ m ftz m 



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THE 



JOURNAL 



OF THE 



COLLEGE OF SCIENCE, 



IMPERIAL UNIVERSITY OF TOKYO, 

 Vol. XXXII. 



^ M # ^ i: ^ fP If 



PUBLISHED BY THE UNIVERSITY. 

 TOKYO, JAPAN. 



1911-1913. 

 MEIJI 44— TAISHO 2. 



