CONTENTS. 



Art. 1.— Notes on the Raised Coral Reefs in the Islands oftheRiukiu 



Curve. (WitJi 2 plates.) By S. Yoshiwara, BlgaJcushi. — Publ. 



Dec. 8th, 1901. 

 Art. 2.— Geologic Structure of the Riukiu (Loochoo) Curve, and its 



Relation to the Northern Part of Formosa. (With 5 plates.) By 



S. Yoshiwara, BigaTiiisld. — Publ, Dec. 8th, 1901. 

 Art. 3.— Corallinae verae Japonicae. {With 7 plates.) By K. Yendo, 



Bigalxushi.—Vyxh\. May BOtb, 1902. 

 Art. 4. — Revisio Umbelliferarum Japonicarum. {With 3 plates.) By Y. 



Yabe, RigaJcushi, Assistant in Botany, College of Science, Tokyo 



Imperial University. — Pabl. May 30th, 1902. 

 Art. 5. — Revisio Alni Specierum Japonicarum. {With 4 plates.) By Dr. 



J. Matsumura, Professor of Botany, Tokyo Imperial University. — 



Pabl. May 30th, 1902. 

 Art. 6.— Notes on a New Fossil Mammal. {With 3 plates.) By S. 



Yoshiwara and J. Iwasaki. — Publ. June 30th, 1902. 

 Art. 7.— Studies in Atmospheric Electricity. {With 4 plates.) By Y. 



HoMMA, RigaJcushi, Professor of Physics in First High School. — 



Publ. Aug. 2nd, 1902. 

 Art. 8.— Experiments on the Magnetostriction of Steel, Nickel, Cobalt, 



and Nickel Steels. {With 2 plates.) By H. Nagaoka, Professor of 



Physics, and K. Honda, Lecturer of Physics. — Publ. Aug. 4th, 1902. 

 Art. 9.— Change in Length of Ferromagnetic Wires under Constant 



Tension by Magnetization. {With 2 plates.) By K. Honda, 



Rigakushi, and S. Shimizu, Rigahushi. — Publ. Aug. 10th, 1902. 

 Art. 10. — Note on the Vibration of Ferromagnetic Wires placed in a 



Varying Magnetizing Field. By K. Honda, Rigakushi, and S. 



Shimizu, Rigakushi. — Publ. Aug. 10th, 1902. 

 Art. 11.— Absolute Messung der Schwerkraft in Kyoto, Kanazawa, Tokyo 



und Mizusawa mit Reversionspendeln ausgeführt. {Mit 2 Tafeln.) 



Von H. Nagaoka, S. Shinjo, und E. Ötani.— Publ. Aug. 15th, 1902. 

 Art. 12.— Change of the Modulus of Elasticity in Ferromagnetic Sub- 

 stances by Magnetization -{With 1 plate.) By K. Honda, 



