13^ 
The American Geologist. 
December, 1905. 
Three formations of the middle At- 
lantic slope, W. J. McGee, (rev.), 
ii, 129. 
Thise great fossil placoderms of 
Ohio, E. W. Claypole, xii, 89; 
New species of Dinichthys, E. 
W. Claypole, xli, 275. 
Ticholeptus beds, (Am. com.), II, 
2L1. 
Tiffcny, artesian well at Daven- 
port. Mi, 117; Record of a deep 
we.., (p.s.n.), v, 124, 128; (cit.), 
x, x95. 
Tight, W. G., (p.s.n.), v, 394; Fre- 
glaeial drainage of Ohio, (rev.), 
xiv, 188; Pre-Glacial tributary to 
Paint Creek, Ohio, (rev.), xvil, 
326; The development of the Ohio 
River, (abs.), xxii, 252; Sketch 
of C. L. Herrick. xxxvi, 1; Bol- 
snn plains of the southwest, 
xxxvi, 271. 
Till, Subglacial and en-Glacial, W. 
Upham, xii, 38. 
Timber lines, I. C. Russell, xxxi, 
121. 
Time, geologic as indicated by the 
Sedimentary rocks of North Am- 
erica, C. D. Walcott, xii, 343. 
Time-piece of geology, E. W. Clay- 
pole, xvii, 40. 
Time of erosion of the Upper Mis- 
sissippi, Minnesota and St. Croix 
Valleys, W. Upham, (abs.), xxli, 
258. 
Tin mines in Dakota, (p.s.n.), vl, 
402; Islands, of the Northwest, 
E. W. Claypole, ix, 228; In Alas- 
ka, (p.s.n.), xxxi, 325; In Alaska, 
(p.s.n.), xxxiii, 64; 200. , 
Tipton-run coal, age of, I. C. 
White, iv, 25. 
Titan ichthys, E. Tv*. Claypole, x, 1; 
Ditto xii, 95; New, E. W. Clay- 
pole, xvii, 166. 
Titaniferous, iron ores of the Ad- 
irondacks, J. P. Kemp, (abs.), 
xvi, 241; Magnetites, J. F. Kemp, 
(rev.), xxvii, 119; Pyroxene, A. 
N. Winchell, xxxi, 309; Magnetite 
in Wyoming, J. F. Kemp, (p.s.n.), 
xxxv, 64. 
To all American geologists, ap- 
peal, P. Frazer, i, 250. 
Todd, J. E. (p.s.n.), iv, 255; (p.s. 
n.), v, 124; Striae and slicken- 
sides at Alton, (abs.), viil, 236; 
(p.s.n.), ix, 34C; Striation of rocks 
by river ice, ix, 396: Volcanic 
dust from Omaha, x, 295; 
Shore lines of ancient gla- 
cial lake, x, 29S; Pleistocene 
piobloms in Mo.. (abs.). xiii, 
210.; Inequalities in the old Pal- 
eozoic sea bottom, xv, 64; Vol- 
canic ash bed near Omaha, xv, 
130; Preliminary report of South 
Dakota, (rev.), xv, 1S6; Inter-lo- 
essial Till near Sioux City, (rev.). 
xvi, 61: Recent geological work 
in S. D. xvi, 202; Log-like con- 
cretions and fossil shores, xvii. 
347; Hydraulic Gradient of the 
main artesian basin of the North- 
west, (abs.), xviii. 219; Revision 
of the Moraines of Minn., (abs.), 
xxiii, 225; Quaternary deposits 
of Mo., (rev.), xviii, 387; Mo- 
raines of the Missouri Coteau, 
(rev.), xx, 329; Survey of So. 
Dak. (rev.), xxiii, 400; New light 
on the drift, xxv, 96; Moraines 
of So. Dak., (rev.), xxvi, 323; 
(p.s.n.), xxviii, 64; Mineral re- 
sources of So. Dak., (rev.), xxx, 
388; Pleistocene geology near 
Lansing, Kan., xxxi, 291; (p.s.n.), 
xxxii, 332; Newly discovered rock 
at Sioux Falls, So. Dak. xxxiii, 
35; (and Hall), geology and wa- 
ter resources of the lower James 
Valley, (rev.), xxxiv, 325. 
Todd's Fork, Ohio, Geological sec- 
tion, O. Foerste, ii, 416. 
Todd Valley, an old Platte channel, 
G. E. Condra, xxxi, 361. 
Toll, E. v., Scientific results of the 
New Siberian islands expedition, 
(rev.,) xvi, 314; Distribution of 
Cambrian and Silurian in Siberia, 
(rev.), xix, 138; Cambrian of Si- 
beria, (rev.), xxvii, 54. 
Tooth structure of Mesohippus wes- 
toni, L. M. Lambe, xxxv, 243. 
Top of the Devonian, (Am. com.), 
ii, 239. 
Topaz chemical composition and 
physical properties of, Penfield, 
and Minor, Jr., xiii, 427; Crystals 
in U. S., Nat. Mus. A. S. Eakle, 
(rev.), xxiii, 125. 
Topley, Wm., Secretary of com- 
mittee of Int. Cong. Geol. (p.s.n.), 
ii, 66; (cit.), v, 208; obit.), xiv, 
406. 
Topographic, map of the U. S., H. 
Gannett, (p.s n.), ix, 346; Forms, 
classification of, S. H. Perry, 
xii, 153; Nomenclature of Spanish 
America, R. T. Hill, (p.s.n.), 
xviii, 62; Study of the Islands of 
Southern Calif., W. S. Tangier 
Smith, (rev.), xxvii, 187; Tillman, 
S. E., Text book of important 
minerals and rocks, (rev.), xxvii, 
4S. 
Topographical, map of the U. S., 
(ed. com.), x, 304: Work of the 
National geological survey, R. T. 
Hill xi, 64; Ditto. Henry Gan- 
nett, xi, 127; Survey of Calif., 
proposed, (p.s.n.), xi, 2S3; Sur- 
vey of Ohio, (p.s.n.), xxv, 394; 
Topography and geology of North- 
ern Mexico, R. T. Hill, viii, 133. 
Torfmoor, R. Sernander and K. 
Kjellmark, (rev.), xx, 334; Ditto, 
G. Hellsing, (rev.), xx, 336. 
Tornquist, S. 1_., Researches into 
the Monograptidae of Seaman 
beds, (rev.), xxiii, 383; Grapto- 
lites in upper Silurian, (rev.), xxv, 
■1 19. 
Toronto and Scarboro drift series, 
Warren Upham, xxviii, 306 249 
Torell, O., Olenellus, (p.s.n.), ii, 
365; (cit.), iv, 50; (p.s.n.), xxii, 
129. 
Torrey, J. (and Barbour), Meteor- 
ites of Iowa, vill, 65. 
