97 Clarke (John M.). Notes on the early stages of certain Goniatites.
N. Y. Geol. Surv., 16th Ann. Rept., pp. 163–170, 7 figs., 1899.
Upper Silurian fauna of the Rio Trombetas, State of Para,
Brazil, and Devonian mollusks from the State of Para,
Brazil.

98

99

100

101

102

103

Archivos do Museu Nacional do Rio de Janeiro, vol. x. Review: Am.
Geol., vol. xxiv, pp. 311-317, 1899.

Geological time.

Science, new ser., vol. x, pp. 695, 1899.

Describes certain methods previously employed by which to estimate
geologic time.

(a) Paropsonema: A peculiar echinoderm from the Intumes-
cens fauna, New York. (b) Remarkable occurrence of
Orthoceros in the Oneonta sandstones of New York. (c)
The Squaw Island "Water biscuit," Canandaigua Lake, New
York.

Abstracts: Am. Assoc. Adv. Sci., Proc., vol. xlviii, p. 226 (4 p.);.
Science, new ser., vol. x, pp. 488–489 (} p.), 1899.

and Schuchert (Charles). The nomenclature of the New
York series of geological formations.

Science, new ser., vol. x, pp. 874–878, 1899.

Discusses the applications which have been made of the subdivisions
of the New York series, and proposes a series of names derived from
characteristic New York localities.

Hall (J.) and. A memoir on the Paleozoic reticulate sponges
constituting the family Dictyospongidæ, Part I.

See Hall (J.) and Clarke (J. M.), Nos. 275 and 276.

A memoir on the Paleozoic reticulate sponges consti-
tuting the family Dictyospongidæ, Part II.

See Hall (J.) and Clarke (J. M.), Nos. 275 and 277.

104 Clements (J. Morgan). Contributions to the study of contact
metamorphism.

105

Am. Jour. Sci., 4th ser., vol. vii, pp. 81-90. Abstracts: Am. Geol., vol.
xxiv, pp. 254-255; Am. Nat., vol. xxxiii, pp. 551-552, 1899.

Describes contact metamorphism of Mansfield slates in the upper
peninsula of Michigan.

and Smyth (H. L.). The Crystal Falls iron-bearing district
of Michigan. With a chapter on the Sturgeon River tongue
by W. S. Bayley, and an introduction by C. R. Van Hise.
U. S. Geol. Surv., Mon. XXXVI, 512 pp., 53 pls., 24 figs.; 19th Ann.
Rept., Pt. III, pp. 19-151, pls. i-xi, figs. 1-6, 1899. Review: Am. Geol.,
vol. xxiv, pp. 308-311, 1899.

Describes the physiography of the region and the occurrence and
character of the Archean and Algonkian formations and of the iron-ore
deposits. Includes geologic maps.

106 Coleman (Arthur P.). Lake Iroquois and its predecessor at Toronto [Canada.]

107

108

109

110

111

112

Geol. Soc. Am. Bull., vol. x, pp. 165–176, 1899. Abstracts: Am. Geol.,

vol. xxxiii, pp. 103-104 ( p.); Science, new ser., vol. ix, pp. 143– 144, 1899.

Describes glacial features of the region.

A new analcite rock from Lake Superior.

Jour. of Geol., vol. vii, pp. 431-436, 1899.

Describes the occurrence and petrographic and chemical characters.

Corundiferous nepheline syenite from eastern Ontario.
Jour. Geol., vol. vii, pp. 437-444, 1899.

Describes occurrence and petrographic character.

Copper regions of the upper lakes [Ontario].

Ont. Bur. of Mines, vol. viii, pp. 121–174, 12 pls., 1899.

Describes the general physiographic and geologic features of the region and the character and occurrence of the Archean rocks and Algonkian and Pleistocene deposits. Includes notes on the petrographic characters of the igneous rocks.

Corundiferous nephelite syenite.

Ont. Bur. of Mines, vol. viii, pp. 250-253, 1899.
Describes character and occurrence in Ontario.

Copper in Parry Sound district [Ontario].

Ont. Bur. of Mines, vol. viii, pp. 259–262, 1899.
Describes character and occurrence of copper ores.

and Willmott (A. B.). Michipicoton iron range.
Ont. Bur. of Mines, vol. viii, pp. 254-258, 1899.
Describes occurrence of iron in the region.

113 Colquhoun (A. J.). Notes on

Canada.

occurrence of quicksilver in

Can. Min. Inst. Jour., vol. ii, pp. 13-16; Can. Min. Rev., vol. xviii, pp. 41–42; Min. and Sci. Press, vol. lxxix, p. 288, 1899.

114 Comely (V. R. de). The gold resources of Mexico. Eng. and Min. Jour., vol. lxvii, pp. 320–321, 348, 1899.

Describes general occurrence of auriferous veins and placers.

115 Cooper (A. S.). The genesis of petroleum and asphaltum in California.

116

Cal. State Min. Bureau Bull., No. 16, 89 pp., 29 figs., 1899.

The genesis of petroleum and asphaltum in California.

Min. and Sci. Press, vol. lxxviii, pp. 124, 149, 182, 205 (2 figs.), 236 (1 fig.), 264 (2 figs. ), 289–290 (1 fig. ), 320 (1 fig. ), 344 (2 figs.), 377 (1 fig.), 401-402, 432 (1 fig.), 460 (1 fig.), 1899.

Describes occurrence and discusses origin.

117 Cooper (A. S.). Phenomena accompanying the accumulations of bitumen.

Min. and Sci. Press, vol. lxxix, pp. 632–633 (3 figs.), 665 (3 figs.), 691 (1 fig.), 721, 1899.

Describes occurrences.

118 Cope (Edward D.). Vertebrate remains from Port Kennedy bone deposit [Pennsylvania].

Phil. Acad. Nat. Sci. Jour., 2nd ser., vol. xi, pt. ii, pp. 193–267, pls. xix-xxi, 1899.

119 Crook (A. R.). Oliver Marcy, LL. D.

Am. Geol., vol. xxiv, pp. 67-72, pl. iv, 1899.

Gives a sketch of Professor Marcy's life.

120 Crosby (W. O.). Archean-Cambrian contact near Manitou, Colorado.

121

122

123

124

125

Geol. Soc. Am., Bull., vol. x, pp. 141-164, pls. xiv-xviii, 38 figs. 1899. Abstracts: Am. Geol., vol. xxiii, p. 92; Science, new ser., vol. ix, p. 101 (2 p.), 1899.

Describes the contact, the structural features, modes of erosion, and the relation of the form of the contacts and the character of the overlying sediments.

Geology of the Wachusett dam and Wachusett aqueduct tunnel of the Metropolitan waterworks in the vicinity of Clinton, Massachusetts.

Tech. Quart., vol. xii, pp. 68–93, 10 figs., 1899.

Describes the character and occurrence of the sedimentary and igneous rocks and structure features of the region.

Geological history of the Nashua Valley during the Tertiary and Quaternary periods.

Tech. Quart., vol. xii, pp. 288–324, 4 pls., 1899.

Describes the physiography and character of the Tertiary and Pleistocene drainage.

[Review of "The genesis of bitumens as related to chemical geology," by S. F. Peckham.]

Am. Geol., vol. xxiii, p. 327 (4 1.), 1899.

[Review of "Notes on North Carolina minerals," by J. H. Pratt.]

Am. Geol., vol. xxiii, pp. 325-326, ( p.), 1899.

[Review of "The origin and chemical composition of petroleum," by S. P. Sadtler, S. F. Peckham, David T. Day, Francis C. Phillips, and Charles F. Mabery.]

Am. Geol., vol. xxiii, pp. 326-327, 1899.

126 Crosby (W. O.). [Review of "Origin of grahamite," by I. C.

127

White; "A contribution to the study of contact metamorphism," by J. Morgan Clements; "The petrographical province of Essex County, Mass.," by H. S. Washington; and "A contribution to the geology of the pre-Cambrian igneous rocks of the Fox River Valley, Wisconsin," by Samuel Weidman.]

Am. Geol., vol. xxiv, pp. 253–257, 1899.

The glacial lake of Nashua Valley.

Abstracts: Am. Geol., vol. xxiii, pp. 102-103 (p.); Science, new ser., vol. ix, p. 106 (} p.), 1899.

128 Cross (Whitman). Telluride folio, Colorado.

129

U. S. Geol. Survey, Geol. Atlas of U.S., folio No. 57, 1899.

Describes the general physiography and geology of the San Juan region, and the occurrence and character of the Algonkian, Juratrias, Cretaceous, Tertiary, and igneous rocks of the quadrangle and discusses the geologic history. Includes topographic and geologic maps, columnar sections, and special illustrations.

See Hill (R. T.). No. 313.

130 Cummings (Uriah). American cements.

Rogers and Manson, Boston, 299 pp., 1898.

vol. vii, p. 627 (4 p.), 1899.

Review: Jour. of Geol.,

131 Curtis (G. C.) and Woodworth (J. B.). Nantucket, a morainal

island.

Jour. of Geol., vol. vii, pp. 226–236, 5 figs., 1899.

Describes the physiographic, glacial, and general geologic features of the region.

132 Cushing (H. P.). Augite-syenite gneiss near Loon Lake, New York.

133

Geol. Soc. Am., Bull., vol. x, pp. 177–192, pls. 19-20, 1899. Abstracts: Am. Geol., vol. xxiii, pp. 106, 330-331; Science, new ser., vol. ix, p. 141, 1899.

Describes megascopic, microscopic, and chemical character of the gneiss and its occurrence in the petrographic provinces. Discusses sequence of eruptions in the Adirondacks.

Report on the boundary between the Potsdam and pre-
Cambrian rocks of the Adirondacks [New York].

N. Y. Geol. Surv., 16th Ann. Rept., pp. 5-27, 1 pl., 2 figs. 1899. Review:
Am. Geol., vol. xxiii, p. 330, 1899.

Describes the geologic history and local geologic features of the region.

D.

134 Dale (T. Nelson). The slate belt of eastern New York and western Vermont.

U. S. Geol. Surv., 19th Ann. Rept., Pt. III, pp. 153-300, pls. xii-xli, figs. 7-16, 1899.

Describes the physiography, the occurrence, and character and structure of the Cambrian and Ordovician beds, the chemical composition of the slates, and the economic geology of the region. Includes a bibliography of the subject.

135 Dall (Wm. H.) Synopsis of the Recent and Tertiary Leptonacea of North America and the West Indies.

U. S. Nat. Mus., Proc., vol. xxi, pp. 873-897, pls. lxxxvii-lxxxviii, 1899.

136 Daly (R. A.). On the optical characters of the vertical zone of amphiboles and pyroxenes; and on a new method of deter

137

138

mining the extinction angles of these minerals by means of cleavage planes.

Am. Acad. Arts and Sci., Proc., vol. xxxiv, pp. 309–323, pls. i-iii, 1899. On a new variety of hornblende.

Am. Acad. Arts and Sci., Proc., vol. xxxiv, pp. 431-437, 1899.

The peneplain. A review.

Am. Nat., vol. xxxiii, pp. 127–138, 1899.

Discusses Professor Tarr's criticisms of the peneplain theory.

139 Darton (Nelson Horatio). Preliminary report on the geology and water resources of Nebraska west of the one hundred and third meridian.

140

141

141a

1416

141e

142

U. S. Geol. Surv., 19th Ann. Rept., Pt. IV, pp. 719–785, pls. lxxiv-cxviii, figs. 208-230, 1899.

Describes the physiography, the character and occurrence of the Pleistocene, Tertiary, and Cretaceous strata and of the underground

waters.

The bad lands of South Dakota.

Nat. Geog. Mag., vol. x, pp. 339–343, 3 pls., 1899.

Describes the general geologic and physiographic features of the region.

Fossil fish in Jurassic of Black Hills.

Abstracts: Am. Geol., vol. xxiii, p. 93 (4 1.), 1899; Science, new ser., vol. ix, p. 103 (7 l.), 1899.

Mesozoic stratigraphy in southwestern Black Hills.

Abstracts: Am. Geol., vol. xxiii, p. 94 (3 p.), 1899; Science, new ser., vol. ix, p. 103 (§ p.), 1899.

Relations of Tertiary formations in western Nebraska region. Abstracts: Am. Geol., vol. xxiii, p. 94 (3 p.), 1899; Science, new ser., vol. ix, p. 103 (5 l.), 1899.

Shore line of Tertiary lakes on slope of the Black Hills. Abstracts: Am. Geol., vol. xxiii, p. 94 (9 1.), 1899; Science, new ser., vol. ix, p. 103 (8 1.), 1899.

Clarke (F. W.) and. Hydromica from New Jersey.

See Clarke (F. W.) and Darton (N. H.), No. 95.

143 Davis (H. J.). Modification in the Jonathan Creek drainage basin [Ohio.]

Denison Univ., Sci. Lab. Bull., vol. xi, art. viii, pp. 163–165, pls. xxvxxvi, 1899.

Describes the physiographic features of the region.