INDEX TO VOL. XX. 
Adams, F. D., 131 ; 200. 
Aguilera, Jos6 R., 184. 
Ami, H. M., 275. 
Arctic exijloration , 137. 
Artesian wells in southern and northern 
New Jersey, and in the Cretaceous of 
Long Island, Lewis Woolman.,186. 
B 
Bain, H. F., Glacial drift in central 
Iowa, 'HZ: Geology of Polk county, 'XU. 
Bascom, F., Finland excursion of the 7th 
Int. Cong. Geol., 339. 
Barton, Geo. H., Glacial observations in 
the Umanak district, 329. 
Beecher, C. E., The systematic position 
of the Prilobites, 33; 138. 
Bell, Dr. Robert, 119. 
Berkey, C. P., ('hemical analysisof the 
Fishor meteorite, 317 ; Geology of the 
St. Croix dalles area, 34.i. 
Beyer, S.W., The Sioux Quartzyte, 272; 
419. 
Blatchley.W. S.,1.35. 
Bonney, T. G., On the nature of Kimber- 
lyte, 58. 
Branuer, J. C, (with Newsom) Red River 
and Clinton monoclines, Arkansas, 1. 
British Association for the Advancement 
of Science, 199,275. 
Bryozoa ; hand book of American genera, 
Geo. B. Simpson, :iW. 
Bryson, John, The Hempstead Plains, 
Long Island, 61. 
Building materials of Pennsylvania, T. 
C. Hopkins, 136. 
Calvin, S., Geological Survey f)f Iowa, 
vol. VI, 271 ; Geology of Johnson county 
[Iowa], 273. 
Castello. Dr. Antonio, 184. 
rhamberlin.T. C.,197. 
Clay pole. E. W., 201); International Con- 
gress of Geologists, 203; 420. 
Clarke, J. M., A Sphinctozoan calci- 
sponge from the upper Carboniferous 
of Nebraska. 3s7. 
CORRESPONDENfE. 
The Henipstcnd Plains, Long Island, 
.John Bryson, 61. 
American Association for the Advance- 
ment of Science, 194. 
International Congress of Geologists, 
E. W. Claypole, 203. 
Origin of the Loess, J. A. Udden, 275. 
The Finland excursion of the 7th Int. 
Congress of (jeologists, .33!). 
The Seventh Session of the Interna- 
tional Congress of Geologists, Persi- 
for Frazer, 409. 
Close of the twentieth volume, 403. 
Cretaceous clay and marl exposure at 
Cliff wood, A. Hollick, 137. 
Crook, A. R., Geological causes of the 
scenery of the Yellowstone Park, 1.59. 
Crosby, W. O., Sandstone dikes of the 
Ute pass, Colorado, 68. 
Cushing, H. P., Note on hypersthene- 
andesitefrom Alaska, 156. 
Dawson, Geo. M., Crystalline rocks of 
Canada, 275. 
Descriptitm g6ologique de Java et Ma- 
doura, R. D. M. Verbeek et R. Fenema, 
:^31. 
Development and growth of Diplograp- 
tus, R. Ruedemann, 136. 
Diceratherium proavitum, J. B. Hatch- 
er, 313. 
Dictyonema cavernosum, Karl Wiman. 
189. 
Drumlins containing or lying on modi- 
fied drift, Warren Upham, 383. 
Dual character of the Kinderhook fauna, 
C. R. Keyes, 167. 
Earthquakes, John Milne, 20!. 
Eastern lobe of the ice sheet, ('. li. 
Hitchcock, 27. 
Eine Torfmoor Untersuchung aus deni 
NOrdlicheu Nerike, Sernander and 
Kjellraark, 334. 
Editorial Comment. 
Man and the megalonyx, .52. 
A tribunal of final appeal should be in- 
dependent of all influence, 54. 
Paleozoic glaoiation. 50. 
Light in the East, 128. 
Missouri Geological Survey, 181, 270. 
Recent estimates of geological time. 268. 
Geological ciironologv of Renevier, 318. 
Rohn's collection of lake Superior 
rocks, 322. 
The terminations ic and ical, ;J22. 
Close of the twentieth volume, 403. 
TheTaconic according to Renevier, 405. 
Extrusive and intrusive rocks as pro- 
ducts of magmatic differentiation, J. 
P. Iddings, 132. 
Fairbanks, H. W., Oscillations of tin 
coast of California during the Pliocem 
and Pleistocene. 213. 
Farrington, O. G., Observations on Po 
pocatepetl, etc., 135. 
