IV Contents. 
ser, 54; Beitrage zur Kenntniss des Siberischen Cambrium, /. 
E. von Toll, 54; La Face de la Terre (Das Antlitz dcr Erde), 
E. Suess, 56 ; A record of the Geology of Texas for the Decade 
ending December 31, 1896, F. 11'. Simonds, 56; Bulletin of the 
Hadley Laboratory of the University of New Mexico, C. L. 
Herrick and others, 58; The Geolog>' of Eastern Berkshire 
county. Mass., B. K. Emerson, 59. 
Monthly Authors' Cat.\logue of American Geological Litera- 
ture 59 
Personal and Scientific News 63 
FEBRUARY NUMBER. 
The Geology of the Tallulah Gorge. 6". P. Jones. [Plates 
IX-XI] 67 
Paleoxtological Speculations. (I). L. P. Gratacap 75 
The Plan of the Earth and its Causes. (I). /. W. Gregory.. 100 
Review of Recent Geological Liter.\ture. 
Jovellania triangularis im Mitteldevon der Eifel, E. Kayser, 
119; A brief review of the titaniferous magnetics, /. F. Kemp, 
119; The Origin of Kaolin, Heinrich Ries, 120; Igneous com- 
plex of Magnet Cove. Arkansas, Henry S. Washington, 121 ; A 
granite-gneiss area in Connecticut, L. G. Westgate, 126 ; The 
origin of nitrates in cavern earths, IVilliam H. Hess, 122; Ig- 
neous rock-series and mixed rocks, Alfred Harker, 123 ; The 
Sundal Drainage System in Central Norway, R. L. Barret, 
123; Bulletin No. 4 of the South Dakota School of Mines, De- 
partment of Geology, C. C. O'Harra, 124. 
Monthly Authors' Catalogue of Americ.a.n Geological Litera- 
ture 124 
Personal and Scientific News 129 
Geological Society of America, Cordilleran section, 131. 
MARCH NUMBER. 
Some Notes on the Trap Dikes of Georgia. 5". 11'. McCallie. 
[Plates XII-XIV] 133 
The Plan of the Earth and Its Causes. (II). /. IV. Gregory. 134 
Orthothetes Minutus, n. sp. from the Sal^m Limestone .of 
Harrodsburg, Ind. E. R. Cummings. [Plate XV] 147 
Notes on Petroleum in California. E. IV. Claypole 150 
Some Salient Features in the Geology of Arizona, with Evi- 
dences OF Shallow Seas in Paleozoic Time. W. P. Blake.. 160 
The Lake Systems of Southern Pat.\gonia. /. B. Hatcher. 
[Plate XVI] 167 
