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— 17 DÉCEMBRE 1883-18 FÉVRIER 1884. 
33 
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miniero petrogralicos. 
— Comision del Mapa Geologica de Espana. Memorias de la —, 
Provincia de Valericia, par Daniel Cortazar et Manoel Fato, 1882. 
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H. Williams. — New crinoids from the roclcs of the Chemung, 17. 
Heilprin Angelo, — On the relatives âges and classification of the post-eocene 
lertiary deposits of the atlantic slope, 150. — Of the âge of the resin rocks of Ca- 
lifornia and the occurrence of Ammonitic remains in tertiary deposits, 196. 
Newberry. — On supposed tertiary ammonites. 
Cope. — Contemporaneity of man and pliocène mammals. — On Bathmodon 
and Triisodon. 
— American Philosophical Society. Proceedings of the —, vol. XX^ 
janv.-avril 1883, part. 4, 
Cope. — On the bains of the eocene mammalia phenecodus and periptychus, 
563. Fourth Contribution to the history of the permian formation of Texas, 628. 
Claypole. — Note on a large fishplate from the upper Chemung beds of nor- 
thern Pennsylvanie, 664. 
part. 2. 
Cope. — On the fishes of the récent and pliocène lakes of the western part of 
the great basin and of the idatro Pliocène lake, 184. — On some fossils of the 
Puerco formation, 168. 
Neehern. — Some évidences of great modem geological changes in Alasko, 187« 
Heilprin. — The synchronisra of geological formations, 197. ~ Note on a col- 
lection of fossils from the Hamilton group, 223. 
Rand. — - Notes on the geology of Chester valley and vicinity, 240. 
— — Transactions of the -, vol. XVI, part. 1, 1883. 
Washington. Smithionian Institution. Annual report of the boaH 
of régents of the , 1881, 
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Golumbus. Geological Survey of Ohio. Zoology and Botany 
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Supplément au t. XIL [Bull Soc. Gêol.) « 
