['.'-.-. 



CONTENTS. 



Vol. III. 



Jurassic Plants from Kaga, Hida, and Echizen. By Matajieö Yokoyama, 



BigahusH. (Plates I. -XIV.) x 



On Pyroxenic Components in certain Volcanic Rocks from Bonin 

 Island. By Yastjshi Kikuchi, Eigalcushi, Assistant Professor of 

 Geology, Imperial University. (Plate XIV bis.) 67 



The Eruption of Bandai-san. By S. Sekiya, Professor of Seismology, 

 and Y. Kikuchi, Rigalaishi, Assistant Professor of Geology, Imperial 

 University. (Plates XV. -XXIV. ) 91 



On Magnetic Lagging and Priming in Twisted Iron and Nickel 



Wires. By Cabgill G. Knott, D.Sc. ( Ediu. \ F.E.S.E., Professor of 



Physics, Imperial University. (Plates XXV. -XXV II.) 173 



Effect of Twist on the Magnetization of Nickel and Iron. By H. N u : v 



oka, BigaJcushi. (Plate XXVII. 



189 



Oxyamidosulphonates and their Conversion into Hyponitrites. By 

 Edwabd Divees, M.D., F.E.S., Professor, and Tahemasa Haga, F.C.S., 

 Assistant Professor of Chemistry, Imperial University 211 



On a Condensation Product of Acetone and Aldehydammonia. By 



MlTSUBTJ KUHARA, I'll. D 



Capillary Attraction in Relation to Chemical Composition, on the 



Basis of R. Schiffs Data. By K. [keda, Rigakushi, of the Imperial 



241 

 University 



Determination of the Elements of the Sun's Spin. By S. Hikayama, 



Ricjakashi, of the Imperial University -' ,0 



On the Fineness of the One Yen Silver Coin. By Yoshimasa Koga, 

 Ri ( ,al.mhi, F.C.S., andOsAMU Yamagata, Rigahishi, Assayers in the Im- 

 perial Mint at Osaka 289 



On Cordierite as Contact Mineral. By Yasushi Kikuchi, Rigakmhi, As- 

 sistant Professor of Geology. Imperial University. (Plate XXV ft I)... 812 



Transient Electric Currents produced by twisting Magnetized 

 Iron, Steel, and Nickel Wires. By H. Nagaoka, Bigakushi, of the 



Imperial University. (Pia i <s XXIX, XXX) 335 



PKIXTED A'X THE SEISHIBUXSHA, TOKYO. 



