CONTENTS 
Page 
The radioactivity of some spring waters at Madison, 
Wisconsin, . . . Herman Schlundt, 1245 
Description of a new species of Eubranchipus from Wis¬ 
consin, - with some observations on its reaction to 
light (with one plate), . Sanvue'l J. Holmes , 1252 
Some European biological stations, (with four plates)* 
Chancey Juday, 1257 
The gravimetric determination of Tellurium, 
Victor Lenher and A. W. Homberger , 1278 
An operculated gastropod from the Niagara formation of 
Wisconsin (with one plate), Edgar E. Teller , 1285 
The annual half-volume of the Transactions is issued by the 
Wisconsin Academy of Sciences, Arts, and. Letters in six num¬ 
bers, under the editorial supervision of the Secretary. 
The price of this part is 35 cents. 
