24 
The American Geologist. 
December, 1905. 
as, R. T. Hill, v, 9, 6S; of Ameri- 
can paleozoic crinoids, S. A. Mil- 
ler, vi, 275; of the glacial pedi- 
ments of Maine, Geo. H. Stone, 
(rev.), vii, 136; of mountain 
ranges, Warren Upham, (rev.), 
Ix, 205; of the theories of the or- 
igin of iron ores, H. V. Winchell, 
x, 277; of the Cepholopoda (rev.), 
x, 327; ditto, F. A. Bather, x. 
396; of the Dyas, Trias and Jura 
in northwest Texas, Jules Mar- 
cou, x, 369; of the Brachiopoda, 
C. Schuchert, xi, 141; of topogra- 
phic forms, S. H. Perry, xii, 153; 
of economic geological deposits, 
xiii, 249; Rules and misrules in 
stratigraphic, J. Marcou, xix, 35; 
of costal forms, F. P. Gulliver, 
(abs.), xxii, 253; Ice-contact of 
glacial deposits, J. B. Wood- 
worth, xxiii, SO; of igneous rocks, 
Lewinson-Lessing, xxiii, 346; of 
igneous rocks according to com- 
position, J. E. Spurr, xxv, 210; 
of igneous rocks. W. H. Hobbs, 
(rev.), xvii, 52; of the crystalline 
cements, E. C. Eckel, xxix, 146; 
Quantitative, of igneous rocks, 
(ed. com.), xxxii, p. 4S; of sedi- 
mentary rocks, A. W. Grabau, 
xxxiii, 228; New, of Blastoidea, G. 
Hambach, (rev.), xxxiii, 45; Ba- 
trachian foot-prints, G. F. Mat- 
thew, (rev.), xxxiii, 259; Upper 
Cretaceous of New Jersey, Stuart 
Weller, xxxv, 17R. 
Clay, what constitutes a clay, (ed. 
com.), xxx, 31S. 
Clayey bands of the drift of the 
delta of the Cuyahoga river, and 
of the delta at Trenton, N. J., G. 
F. Wright, (rev.), xxii, 250. 
Clay and kaolin deposits of Eu- 
rope, H. Ries, (p.s.n.), xxi, 266. 
Clays, origin and distribution of 
Minnesota, C. P. Berkey, xxix, 
171. 
Clays and clay industry of Wiscon- 
sin, E. R. Buckley, (rev.), xxx, 
329. 
Claypole, E. W., Darwin and geol- 
ogy, I, 152, 211; Subterranean 
commotion near Akron, Ohio, I, 
190; The future of natural gas, I, 
31; Lake-age in Ohio, (rev.), I, 
63; Condition of the interior of 
the earth, i, 3S2; (p.s.n.), 396; 
Earthquake tremors at Charles- 
ton, S. C li, 135; Clark's collec- 
tion of fishes at Borea, II, 62; 
Glaciers and glacial radiants in 
the ice age, iii, 73; Vascular na- 
ture of the trees of the Coal Meas- 
ures, iii, 55; The story of the 
Mississippi-Missouri, iii. 361; 
(cit.), iv, 337; Illustration of the 
"level of no strain" in the crust 
of the earth, v, S3; Making of 
Pennsylvania, y, 225: Paleontolo- 
gical notes from Indianapolis, vl, 
255; Notice of the death of Frank- 
lin C. Hill, vii, 68; Megalonyx in 
Holmes Co., Ohio, vii, 122, 149; 
Episode in the paleozoic history 
of Pennsylvania, viii, 152; Pre- 
Glacial channel near Akron, Ohio, 
(abs.), viii, 195; Deep boring near 
Akron, (abs.), viii, 239; Geologic 
correlation, (abs.). viii, 251; New 
fishes from the Cleveland shale, 
tabs.), ix, 217; The tin islands of 
the northwest, Ix, 22S; (p.s.n.), 
Ix, 2S2; Gigantic placoderm from 
Ohio, x, 1; Geology of the British 
association at Edinburgh, x, 1SS; 
Dentition of Titanichthys and its 
allies, (p.s.n.), x, 193; The head 
of Dinichthys, x, 199; A new coc- 
costean, Coccosteus cuyahogae, 
xi, 167; Pre-Glacial man not im- 
probable, xi, 191; Cladodont 
sharks of the Cleveland shale, xl, 
325; The three great fossil placo- 
derms of Ohio, xii, 89; On Glypto- 
dendron in Ohio, (cit.), xii, 133; 
Early man in America, (abs.), xll, 
175; Three new species of Dini- 
chthys, xii, 275; A new species of 
Carcinosoma, xiii, 77; Cladodus, a 
new selachian, xiv, 137; A new 
placoderm from the Cleveland 
shale, xiv, 379; On a new speci- 
men of Cladodus clarki, xv, 1; 
Recent contributions to our 
knowledge of the cladodont 
sharks, xv, 363; (p.s.n.), xvl, 129, 
328; Actinpphorus clarki, xvl, 20; 
Glacial notes from the planet 
Mars, xvi, 91; Geology at the 
British association for the ad- 
vancement of science, xvi, 300; 
The time piece of geology, xvii, 
40; A new Titanichthys, xvii, 166; 
Ancestry of the upper Devonian 
placoderms of Ohio, xvii, 349; 
Dinichthys prentis-clarki. xviii, 
199: Ancient and modern sharks, 
and the evolution of the class, 
(abs.), xviii, 222; Human relics 
in the drift of Ohio, xviii, 302; A 
new Dinichthys — Dinichthys kep- 
leri, xix, 322; International con- 
gress of geologists, xx, 203; (p.s. 
n.), xx, 420; Paleozoic geography 
of the eastern United States, 
(abs.), xx, 200; Paleolith and neo- 
lith, xxi, 333; Microscopical light 
in geological darkness, xxii, 217; 
Glacial theories — cosmical and 
terrestrial, xxii, 310; The earth- 
quake of San Jacinto, Dec. 25, 
1S99, xxv, 106, 192; (p.s.n.), xxv, 
129; Notes on petroleum in Cali- 
fornia, xxvii, 150; (p.s.n.), xxvil, 
130; (obit.), xxviii, 247; Bio- 
graphical sketches, by Comstock, 
Richardson and Bridge, xxix, 30; 
Bibliography, xxix, 40; (p.s.n.), 
xxx, 71; The Devonian era in the 
Ohio basin, xxxii, 15, 79, 240, 312, 
335. 
Clayton stone axe, (p.s.n.), xxxl, 
193. 
Cleavage, different structures de- 
scribed under, Van Hise, (p.s.n.), 
xvii, 125; Discussion bv Geo F. 
Becker, (p.s.n.), xvii, 126. 
Clements, J. M., Some stages in 
the development of rivers, (abs.), 
xvii, 126; Study of some exam- 
ples of rook variation, (rev.), xxii, 
381; Contribution to the study of 
contact metamornhism, (rev.), 
xxiv, 254: (and H. L. Smyth), 
Crystal Falls iron-bearing district 
