CONTENTS OF VOLUME VI. 
I. Further Data on the Reduplication in Silkworms. By Y. Tanaka. i 
n. 1 On the Occurrence of Creatinin in Leguminous Seeds. By K. 
Oshima and M. Ariizumi 17 
2 Über die kolloidalen Eigenschaften der sauren Böden in 
Japan- Von T. Tadokoro * 27 
m. Über die Chrysopiden-Fauna Japans. Von H. Okamoto 51 
rV. Observations on Hotaru-ika Watasenia scintillans. By M. Sasaki . 75 
