CONTENTS. 



Art. 1. ^I. YoKOYAMA : — Fossils from the Upper Musashino of Kazusa 

 and Shimosa. 1 1/7// 17 platen. Publ. July 7th, 1922. 



Art, 2. T. Kaburaki :— On some Japanese Freshwater Triclads ; with 

 a Note on the Parallelism in their Distribution in Europe and 

 Japan. Witij 1 pJafe ////// /.^ ic.r/-Jif/'irc--<. Pabl. Jane 2ord, 1922. 



Art. 3. T. Kaburaki : — On some Japanese Tricladida Maricola, with a 

 Note on the Classification of the Group. 1 17/// J phtte and <; iext- 

 jignrc.^. Piibl. Septcmljcr Ttli, 1922. 



Art. 4. T. Kaburaki : — On the Terrestrial Planarians from Japanese 

 Territories. Willi l plate and J.J text-fignrc^. Publ. September 

 30th, 1922. 



Art. 5. T. Takagi : — Über das Reciprocitätsgesetz in einem beliebigen 

 algebraischen Zahlkörper. I*a])l. Septeialjcr 16th, 1922. 



Art. 6. T. Tkrada : — On some Remarkable Relations between the 

 Yearly Variations of Terrestrial Phenomena and Solar Activi- 

 ties. 117//? 17 tc.rt-fi(/nn:-<. Piil)l. January 24th, 1923. 



Art. 7. ]M. Y(JKOYAMA : — On some Fossil Shells from the Island of 

 Saishu in the Strait of Tsusima. 11//// 1 plalc. Publ. January 

 24t]i, 1923. 



Art. 8. E. Steciiow : — Die Hydroidenfauna der Japanischen Region. 

 Publ. February 2Gth, 1923. 



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