CONTENTS. 
Proceedings: December 7th, 1891. Regular Business Meeting ( 
tinued). Astronomical Section . nian ea ciemhes 
Transit Factors for the Observatory of Columbia eign gre 
Monet and C. R. Mann. ABs, title.) . . = 
‘ag By Harotp Jacosy. (By title.) . 4 : b. 
Report upon the Meeting of the National Academy of Soiences. ‘By a a 
iris: Harotp Jacosy. (Abstract.) . . ep 
Changes on the Lunar Surface. By J. K. Bae: (Abstradh: ) Sos 
Proceedings: December 14th, 1891. Stated Meeting . . SNe 
> The Railway Problem in China. By Joun A. CuurcH. . Beisrece 
A New Form of Vacuum Tube and a New Electrodynamic Current Pn 
Interruptor. By M. I. Purin. (No abstracts.) . 5 : ° 
Proceedings: December 21st, 1891. Stated Meeting . . . .- 
Geographical Exhibition ;') >; cap eee toe 
A List of Early Works on North American Geology a ake 
Public Lecture: Mountains, their Origin and History. By H. L. 
FAIRCHILD . . : ° ° . . em 
Proceedings: January 4th, 1892, Ropuiak Business Meeting «oe one 
Election of Members . ° ° : 4 5 ° 4 es 
: . Proposals for Membership ° . 23 tps 
Astronomical Section: Progress of Standard Time i in anieens : 
Letter from the American Meteorological Society . . es Gc 
Proceedings: January llth, 1892. Stated Meeting : . * ‘ 
The Natural Dyes as applied to Wool. By_H. T. Vuursé and D. Wook nae 
Warp . : : : A > . . 
Proceedings : January 18th, 1892, Stated Meeting sie ° 
Public Lecture: The Lochs and Crannogs of Scotland. By FRank- , 
Lin W. Hooper . : oye he, NS ee 
Proceedings: January 25th, 1992. Stated Mashing : 5 . os 49 
The Origin and History of Mineralogical Names. By Aupert H. ~ 
CueEsteR. (Abstract.) . E : 5 : ° ° 
Remarks by Dr. Botron and others ° . 
Proceedings: February Ist, 1892. Regular Rusiieee Meeting 
Report of the Audubon Monument Committee ° '. 
Report of the Council, Recommendations . . 
Election of Members. es oe 
List of Officers for 1892-1893 7 b ; 4, 
