Contents. 
NiO iN Oees 
On the Telegraphic Determinations of Longitude by the Bureau of 
Navigation. Lieut. J. A. Norris, U.S. N., 
Reports of the Vice-Presidents : 
Geography of the Land. Herbert G. Ogden, 
Geography of the Air. A. W. Greely, Chief Signal Offi- 
cer, U.S. A., : : : é 
Annual Report of the Treasurer, 
Report of Auditing Committee, 
Annual Report of the Secretary, 
National Geographic Society : 
Abstract of Minutes, 
Officers for 1890, 
Members of the Society, 
April 1890. 
WiOle eam NOne- 
The Rivers of Northern New Jersey, with notes on the classifica- 
tion of rivers in general. William Morris Davis, 
(With seven illustrations.) 
A Critical Review of Bering’s First Expedition, 1725-80, together 
with a translation of his original Report upon it. Dr. Wm. H. 
Dall, : ; ; : 
(Illustrated by one Map.) 
Supplementary note on the alleged observation of a Lunar Eclipse 
by Bering in 1728-9. Marcus Baker, 
May 1890. 
Wot, Ih IN@:- 3h 
The Arctic Cruise of the U.S. S. Thetis in the Summer and Autumn 
of 1889. Lieut. Comdr. Chas. H. Stockton, U.S. N., 
(Illustrated with view of Herald Island and one map.) 
The Law of Storms, considered with special reference to the North 
Atlantic. Hverett Hayden, Marine Meteorclogist, Navy Dept., 
(One View and seven Illustrations. ) 
The Irrigation Problem in Montana. H. M. Wilson, 
81 
111 
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