The American Geologist. 
Dri-umber, 190.",. 
F. A. Bather, xxvi, 307; Structure 
and relations of Uintacrinlts, 
Frank bpringer, (rev./, xxvm, 
25s; Actiiiumetra from tiie Flor- 
ida reels, I-. bpringer, xxx, ys; 
Sagenocrinus and I i inus, 
F. springer, xxx, Ss; New Cys- 
toidea and a new Camarocrirtus, 
C. Schuchert, xxxii, 230; With re- 
el to Portage (ed. com.;, xxxv, 
246. 
Crinoids and Mastoids,- R. R. Row- 
ley, rev.), viii, 186; Blastoidi 
cystoicis from Missouri, R. K. 
Rowley, xxv, 65. 
Criteria of subglacial and engiacial 
drift. Wan en L'pham, viii., o,0. 
Critical notice of the stratigraphy 
of the Missouri paleozoic, .broad- 
head, xii, 74; Periods in the his- 
tory of the Earth, J. LeConte, 
(rev.), xvi, 317. 
Croil , James., on pre-nebular con- 
ditions, (cit.), Iv, 201; (obit., 
p.s.n.), vii, 207. 
Croll's Theory redivivus, (ed. com,), 
xxvii, 174. 
Crook, A. R., Geological causes of 
the scenery of the Yellowstone 
park, xx, 159; Biographical sketch 
of Oliver Marcy, xxiv, 67. 
Cozzens, issachar, Jr., Biographical 
sketch. A. W. Vdgdes, xxiv, 327. 
Crosby, W. O. Tables for the de- 
termination of minerals, (rev.), 
li, 340; Finer portions of the till, 
(p.s.n.), v. 123; Color of soils of 
high and low latitudes, viii, 72; 
Origin of parallel and intersect- 
ing joints, xii, 369; Geology of the 
Boston basin, (rev.), xui, 192; 
(cit.), xiii, 20.3; Origin of pegma- 
tites, (rev.), xiii, 215; Tables for 
the determination of minerals, 
(rev.), xvi, 262; Sea mills of Ce- 
phalonia, xvii, 265; Engiacial drift 
xvii, 203; Glacial lakes of the 
Boston basin, (p.s.n.), xvii, 128; 
(with M. L. Fuller), Origin of 
pegmatite, xix, 147; Sandstone 
dikes of the Ute pass, (p.s.n.), 
xx, 68; History of the Blue Hills 
complex, Boston basin, (abs.), 
xxii, 203; Glacial lake of the 
Nashua valley, (rev.), xxiii, 102; 
Archean-Potsdam contact in the 
vicinity of Manitou, Col., xxiii, 
92; On the origin of phenocrysts 
and development of the porphyr- 
itic structure, xxv, 299; Geologic- 
al history of the Nashua valley, 
(rev.), xxv, 252; p.s.n.), xxvi, 398; 
Geology of the Boston basin, vol. 
i. part iii, (rev.), xxvii, 179; arp 
the amygdaloidal melaphyrs of 
the Boston basin intrusive or 
contemporaneous? xxvii, 324: Ori- 
gin of eskers, xxx, 1: Hanging 
valleys of Georgetown, Col., xxxii. 
42; (p.s.n.), xxxii, 197, 332; Igne- 
ous rocks of the lower Neponset, 
Mass., xxxvi, 34, 69. 
Cross-banding of strata by current 
action. J. B. "Woodworth, xxvii. 
281. 
Crossing the Valdez glacier at 
Bates pass, W. R. Abercrombie, 
xxiv, 349. 
Crosskey, H. W., (obit.), xiii, 75. 
Cross, v; nit/nan, Close of the Cre- 
taceous, (rev.), x. 256; Peculiar 
schists near Salida, Colo., (rev >, 
xi. 120; Sandstone dikes, (abs.), 
xiii, 215; Diorite of the Ophir 
loop, (abs.), xvii, 345; (p.s.n.), 
xvii, 40S; (p.s.n.), xxxiii, 64. 
Crucial points in the geology of the 
Like Superior resion. N. H. Win- 
chell, xv, 153, 229, 295, 356; Ditto, 
xvi, i2, 75, 150, 205, 269, 331. 
Crustacea. Bibliography of 1 
zoic, 169S-18S9, A. W. Vogdes, 
(rev.), vii, 379. 
Crystal Falls iron-bearing district 
of Michigan, Clements and 
Smyth, (rev.), xxiv, SOS. 
Crystalline rock near the surface in 
Pawnee county, Neb., F. W. Rus- 
sell, i. 130. 
Crystalline rocks later than the Ar- 
chen, (Am. Com.), ii, 164: Crys- 
talline schists, (p.s.n.), il, 367; 
Recent work on, by Prof. Judd, 
(ed. com.), iv, 177; Rocks of 
southern California, O. H. Her- 
shey, xxix. 273; Of the San Ga- 
briel mountains, Arnold and 
Strong, xxxv, 391; Rocks of Mis- 
souri, E. Ha worth, (rev.), ix, 55. 
Crystalline schists, relation to secu- 
lar rock decay, R. Pumpelly, 
(rev.), vil, 259. 
Crystalline limestones, ophiolites 
and associated schists of the east- 
ern Adirondacks, J. F. Kemp, 
(abs.). xv, ('I. 
Crystallization. Spherulitic, ' (ed. 
com.), viii, 3S7. 
Crystallized slags, from copper 
smelting, A. C. Lane, (abs-), xv 
OS. 
Crystallogenesis, H. Hensvoldt, v, 
301, 375. 
Crystallography: A treatise on the 
morphology of crystals, N. Story- 
Maskelyne, (rev.), xvii, 53; Ele- 
ments of, Moses and Parsons, 
(rev 1. xxvi, 323: Elements of, G. 
H. Williams, (rev.), ix, 20?. 
Crystals Characters of, A. J. Mos- 
es, (rev.), xxiii, 389. 
Cuba. Mineral resources, B. E. 
Levy, (rev.), xxlil. 328; Harriet 
C. Brown, (rev.), xxxii. 187; S" r i- 
nospd union with Florida. Re- 
minder to Dr. Dall's criticism. J. 
W. , Spencer, xxxiv, 110. 
CnHqnite "t Butte. Mont., H. V. 
Winchell, xxii, 245. 
Culver. G. E. Plans for irrigation 
in Dakota, (p.s.n.). iv, 389; A lit- 
tle known region in northwestern 
Montana, (rev.'), xi, 412; The ero- 
sive action of ice. (rev.), xvi, 316. 
Cumings. E. R., (p.s.n.), xxi. 74; 
Orthothetes minutus, n. sc from 
the Salem limestone of Harrods- 
burs:. Ind.. xxvii, 147; Revision of 
certain bryozoan genera, xxix, 
