CONTENTS OF VOL. II. 
VI. H. Geetmuypen. Astronomical Observations. Pp. 1—136, with two 
Charts. 
(Received August 1899—August 1900.) 
VII. Axsex S. Sreen. Terrestrial Magnetism. Pp. 1—196, with 17 Plates. 
(Received May—December 1900.) 
VIII. O. E. Scurorz. Results of the Pendulum Observations and some 
Remarks on the Constitution of the Earth’s Crust. Pp. 1—90. 
(Received July 1900.) 
