I V Contents. 
Editorial Comment.— A case of geological parasitism, 123. 
Recent Geological Literature— Geological Survey of New Jersey, 126. 
Report on the Doobaunt, Kazan and Ferguson rivers and the 
northwest coast of Hudson bay and on two overland routes from 
Hudson bay to Winnipeg, J. Bikr Tvkkell, 128. — Batesville 
sandstone of Arkansas, Stuakt Weller, 129. 
Monthly Authors'' Catalogue of American Geological Literature, 131. 
Correspondence. — Zirkelyte : a question of priority, 133. 
Personal and Scientific Neics, 134. 
MARCH NUMBER. 
Geology of the St. Croix Dalles. II. Charles P. Berket. 
[Plates XII and XIII.] 139 
Residual Concentration by Weathering as a Mode of Gen- 
esis of Iron Ores. James P. Kimball. 155 
Oscillations of Level of the Pacific Coast of the United 
States. William P. Blake. ,. 164 
Valley Moraines and Drumlins in the English Lake Dis- 
trict. Warrex Upham 1(55 
Some Methods of Determining the Positive or Negative 
Character of Mineral Plates in Converging Polarized 
Light with the Petrographical Microscope. M. E. 
Wadsworth. 170 
The Geology of the Keweenawan Area in Northeastern 
Minnesota. II. A. H. Elftman 175 
Revieiv of Recent (?t!oZogf/ca7I,i7t'rai»;-e.-Pal9eontologiskaNotiser, Ger- 
hard Holm, 188. — A Revision of the Puerco Fauna, W. D. Mat- 
thew, 190. — Geology of Massanutten Mountain in Virginia, Ar- 
thur CoE Spencer, 191. 
Mo)ithly Authors^ Catalogue of American Geological Literature, 192. 
Correspondence.— CoTielixtiou of Moraines with Beaches on the Border 
of Lake Erie, Frank Leverett, 195. — A new well at Rock Island, 
111., J. A. Udden, 199. 
Personal and Scientific News, 200. 
APRIL NUMBER. 
An Occurrence of Acid Pegmatyte in Diabase. T. A. 
Jaggar. [Plate XIV.] 203 
The Geology of the Environs of Tammerfors. J. J. Sed- 
erholm 213 
