Index, Volumes I-XXXVI. 
1 1 1 
Potential energy as a cause for 
solar heat, Ksdzie, (rev.), I v. 
183. 
Potomac, formation, (p.s.n.), j, 
136; formation, W. J. McGee, 
(rev.), ii, 129; formation. Fos- 
sil wood and lignite. F. H. Knowl- 
ton, iii, 99; or younger Meso- 
zoic flora. W. M. Fontaine, (rev.), 
v, 315; formation, L. F. Ward, 
(i ». xviii, j18. 
Potosi silver district, A. F. Wendt, 
(rev.), viii, 397. 
Potsdam sandstone, Original des- 
cription of Emmons, i, 174.. 
Potsdam and Calciferous in Que- 
bec, (rev.), xiv, 67. 
Pounding mill still in use in Ky., 
J. M. Hodge, (p.s.n.), i, 68. 
Poynting, J. H., Ihe mean density 
of the earth, (rev.), xiil, 358. 
Powell, J. W. (p.s.n.), ii, 439; 7th 
report U. S. geological survey, 
(rev.), iii, 399; Plans for irriga- 
tion, (p.s.n.). iv, 128; (cit). viii, 
251; 256; 10th report U. S. G. S-, 
(rev.), ix, 337; Evidences of man 
in Glacial gravel, (ed. com.), 
xii, 115; 11th report U. S. G. S.. 
(rev.), xii, 259: (p.s.n.), xiii, 415; 
Water resources of the U. S. 
(abs.), xiv, 202; 13th report U. 
S. survey, rev.), xv, 48; 14th an- 
nual report of U. S. G. S. (rev.), 
xvi, 310: 15th report U. S. G. S. 
(rev.), xvlil, 317; Notice of death 
and funeral, (p.s.n.), xxx, 272; 
Sketch of, G. P. Merrill, xxxl, 
327. 
Prather, J. K., Atlantic highlands 
section of the Cretacic, xxxvl, 
162. 
Pratt, J. H., Notes on Anthophyllite 
etc., (rev.), xxii, 377; Origin of 
corundum, (rev.), xxii, 377; As- 
sociated minerals of Rhodolite, 
(rev.), xxiii, 328; Origin and com- 
position of Chromite. (rev.), 
xxiv, 181; Separation of alumina 
from molten magmas (rev.), xxiv. 
319; Two new occurrences of 
corundum in North Carolina, 
(rev.), xxvl, 393; (p.s.n.), xxxvi, 
331. 
*>re-Cambrian, formations, R. D. 
Irving, (rev.), iv. 111; floor in the 
northwestern states, C. W. Hall, 
(p.sn.)./ xv, 67: jvolcanoes in 
southern Wis.. W. H. Hobbs, 
(rev.), xvl, 240; Debris of spong- 
es, L. Cayeux, (rev.), xvi, 59; 
Of Brittany H. Rfiuff. (rev.), xvii, 
396; and post-Ordovician dikes in 
the Adirondacks. H. P. Cu-shing, 
(rev.), xvi II, 390; topography of 
the Adirondacks, J. F. Kemp : 
(abs.), xvlll, 63; Base-levelling I 
in the Northwestern states, C. I 
W. Hall, (rev.), xviii, 238. 
Pre- Cretaceous nr:p of meta- 
morphic rocks of Calif., H. W 
Fairbanks, Ix, 153. 
Pre-Glacial, man, Madisonville, 
Ohio, (p.s.n.), i, 137: ditto. Cod. 
com.), i, 193; channels at the falls 
of the Ohio, i. Bryson, v, 186; 
man not improbable, E. W. Clay- 
pole, xl, 191; and post-glacial 
valleys of the Cuyahoga River, 
Upham, (abs.). xvii, 105; elevation 
of Iowa, H. F. Bain, (rev.), xvl, 
62; river in northern Canada, R. 
Bell, (abs.), xvi, 132; of Paint 
creek W. G. Tight, xvii, 326; 
Valleys of the Missisippi and its 
tributaries, F. Leverett, (rev.), 
xvii, 118; Cuyahoga gorg' \\ . 
i pham, (rev.), xviii, 223; Erosion 
cycles in northwestern 111., O. 
H. Hershey, xviii, 72: soils. J. A. 
Udden, xxi, 262; drainage in 
Ohio, J. A. Bownocker, xxili, 
178; erosion in Niagara gorge, 
W. Upham. xxviii, 235. 
Pre-historic, horses, (p.s^n.), ix, 67; 
America. the mound-buiUl< rs, 
their works and relics S. D. Peet. 
(rev.), xi, 349; Noted localities. 
J. H. Wilson, xxxiii, 267. 
Pre-Kansan deposits in Iowa. H. 
F. Bain, xxi, 255; and Iowan de- 
posits of Long Island, M. L. Ful- 
ler, xxxii, 308. 
Preliminary report, on petroleum 
and natural gas, E. Orton, (rev. I 
ii 62; Sea coast swamps, N. S 
Shaler, (rev.), i, 25S; notin , >f 
Temnocyon, John Eyerman. xiv 
320; report, Northeastern Minn. 
Upham, (rev.), xv, 51; On the 
geology of So. Dak., J. E. Todd 
(rev.), xv, 186; Marbles of Geor- 
gia S. W. McCallie, (rev.), xv 
329; notes on the Great Lakes 
in 1895, F. B. Taylor, xvii, 253; 
report on the Florida parishes 
of La.. W. W. Clendenin, (rev.) 
xviii, 322; Geology of the com- 
mon roads of the U. S.. (rev. i 
X. S. Schaler, xviii, 318; Mar- 
quette district of Mich.. Van Hise 
and Bayley, (rev.), xviii. 3l'*>, 
notes on geology of the Yukon 
O. Nordenskjold. xxiii. 288; no. 
tice of the Etoheminian fauna, 
G. F. Matthew, (rev.), xxiv. 1:'.".: 
e of the Etchminian fauna, 
G. F. Matthew, (rfev.), xxv, 121: 
report, Clays of Georgia, G. E 
Ladd, (rev.), xxv, 219; Artesinn 
well svstem of Georgia. S. W 
McCallie. (rev.), xxv, 2.".1 : Sec 
tion in Alpena county. Mich., A. 
W. Grabau, xxviii, 177 report on 
ial of Georgia. S. \V. McCallie 
roads and road building mater- 
(rev.), xxix, 56; report on the 
water resources of the i : 
Plain-. N. II. Darton. (rev.), 
xxxv, 317; list of mastodon 
and mammoth remains. N. C. 
Anderson, (rev.), xxxvi, 258. 
Preller, C. S., (p.s.n.). xvii, 268. 
Pre-natal history of the geological 
societv of America, (ed. com.), 
vl, 181, 
Pre-nebular conditions. A. Win- 
chell. Iv, 196. 
Pre-paleozoic decav of crystalline 
rocks, r. Bell, (rev.), xiii. 214. 
Presrott, The Immediate work in 
chemical science, x, 282. 
