18 dons. — 17 juïn-4 novembre 1878. 
— American Journal of Science and Arts (The), 3esér., t. XVI, 
n 03 91-94; 1878. 
G. J. Brush etEd. S. Dana. — On a new and remarkable minerai locality in 
Fairfîeld county, Connecticut, with a description of several new species occuring 
there, 33, 114. 
J. P. Lesley. — On Terrace Levels in Pennsylvania, 68. 
Vogdes. — Cretaceous and Tertiary of Charleston, S. C., 69. 
L. E. Hicks. — Discovery of the Cleveland Shale in Delaware county, Ohio, 70; 
— The Wawerly Group in Central Ohio, 216. 
J. Le Çonte. — On the Structure and Origin of Mountains, with spécial reference 
to recent objections to the « Contractional Theory », 95. 
I. C. Russell. — On the occurence of a Solid Hydrocarbon in the Eruptive Rocks 
of New Jersey, 112. 
J. G. Percival. — On « Indurated Bitumen » in cavitiesin the trap of the Con¬ 
necticut valley, 130. 
Whiteaves. — On some Primordial Fossils from Southeastern Newfoundland, 224. 
0. C. Marsh. — New Pterodactyl from the Jurassic of the Rocky Mountains, 233. 
J. L. Smith. — On the composition of the new Meteoric Minerai Daubréelite and 
its frequent, if not universal, occurence in Meteoric Irons, 270. 
J. W. Mallet. — On Barcenite, a new Antimonate, from Huitzuco, Mexico, 306. 
A. E. Yerrill. — Occurence of Fossiliferous Tertiary Rocks on the Grand Bank 
and George’s Bank, 323. 
G. W. Hawes. — On Liquid Carbonic acid in Syenite, 324. 
Philadelphie. Academy of Natural Sciences of —. Proceedings of 
the —, 1877. 
Koenig. — On Astrophyllite, Arfvedsonite, and Zircon, 9; — On Enstatite, 198; 
— Protovermiculite, a New Minerai Species, 269; — Mineralogical notes, 276, 290, 
292, 294; — On Strengite from Rockbridge Ço., Va., 277. 
Persifor Frazer, Jr. — On the Hudson River and Utica Slates of Pennsylvania, 14; 
— Anthracite from « Third-Hill Mountain », West Virginia, 16; — On Copper- 
bearing Rocks of the Mesozoic Formation, 17. 
Leidy. — On Eozoon, 20; — Concrétions resembling Bones, 290; — On Fossil 
Fishes, 294. 
T. A. Conrad. — On certain generic names proposed by Zittel, Stoliczka, and 
Zekeli, 22 ; — Notes on Shells, 24. 
C. M. Galloway. — On Minerai Caoutchouc, 131. 
Vogdes. — Notes on the généra Acidaspis, Murchison; Odontopleura, Emmerich; 
and Ceratocephala, Warder, 138. 
E. Goldsmith. — On Lavendulite from Chili, S. A., 192. 
J. L. Smith. — On the Earthy Oxides of Samarskite, 194. 
Th. D. Rand. — On the rocks near Philadelphia, 251. 
W. M. Gabb. — Correction of «Notes on American Cretaceous Fossils », 306. 
— Philosophical Society, held at—, for Promoting Useful Knowledge. 
Proceedings of the —, t. XVII, n° 100; 1877. 
E. D. Cope. — On the Vertebrata of the Bone Bed in Eastern Illinois, 52; — On 
a New Species of Adocidæ from the Tertiary of Georgia, 82; — On some new or 
little known Reptiles and Fishes of the Cretaceous N° 3, of Kansas, 176; — Des¬ 
criptions of Extinct Vertebrata from the Permian and Triassic Formations ofthe U. 
