JOHN S. NEWBERRY. 
PAGE. 
Geological Facts recently observed in Montana, Idaho, Utah and 
Polorado,: (Octs £9 tachy.ta tare ase. 2. Soe i Sos 4 
Hypothetical High Tides, as Agents of Geological Change (Jan. 
G, LGOZ) ie eh Pee te ee SFC ae Soa Shao. os Sk Ge ASR 80 
The Origin and Relations of the Carbon Minerals, (Feb. 6, 1882) 109 
The Ancient Civilizations of America, (Lecture, Feb. 20, 1682). « \§20 
JOHN K. REES. 
The International Time-System, (Jan. 16, r882)............... 86 
Some Results of Photography as Applied to Astronomy, (Lecture, 
MIE CU SOR EOS 2) oon tha telat bo ee oN 143 
ISRAEL C. RUSSELL. 
Sulphur Deposits in Utah and Nevada, (May 22, 1882)........ 168 
JAMES H. STEBBINS, JR. 
On some New Salts of Thymole Sulpho-Acid, andsome New 
Bacts concermme thejsame, (Oct.-3,, 16st). 2... =5< «- coe 3 
W. LE CONTE STEVENS. 
Wheatstone and Brewster’s Theory of Binocular Perspective (Oct. 
PARTON eo CL OEP CE WOOLCULS ac esa niet ck sal 2 wlope sso 8 
The Mammoth Cave of Kentucky, (Dec. 12, 1881), wzth one 
Sie ME css apa a So ee OE ene te et ela ae 58 
7 New Reversible Stereoscope, (Feb. 3, 1882),... ..... 2... 225.23 118 
JOHN J. STEVENSON. 
The Mineral Resources of Southwest Virginia, (April 24, 1882). 159 
ROBERT H. THURSTON. 
On the Behavior of Steam in the Steam Engine Cylinder, and on 
Cumesat jmictency,. (Keb: 13; 1662)... jp... S.cc. ale oP I 
WILLIAM P. TROWBRIDGE. 
On the Determination of the Heating Surface Required in Steam 
Pipes employed to produce any Required Discharge of Air 
through Ventilating Chimneys, (Dec. 19, 1881).... ....... 67 
4 
F. G. WEICHMANN. 
Fusion-Structures in Meteorites, (April 10, 1882)....... ...... 153 
