DONS. 
— 18 JUIN-5 NOVEMBRE 1883. 
13 
De Botella. — Resena fisica y geologica de la région S.O. de la provincia de 
Almeria, 227. 
De Cortazar. — Glassificacion y colerido de los mapas geologicos, 319. 
Calderon y Arana. — Estudio petrografico sobre las rocas volcanicas del cabo 
de Gâta e isla de Alboran, 333. 
— Sociedad espanola de historia natural. Annales de la —, t. XII, 
N° 2, 1883. 
États-Unis. Ballimore. American chemical journal, t. V, N° 1, 
avril 1883. 
— American journal of mathematics, t. V, N° 1, 1882. 
— John Hopkins university circulars, t. Il, n° 21, 1883. 
Uhler. — Geology of the surface features of the Baltimore area, 52, 53. 
Boston. Society of natural history. Memoirs of the — , t. III, N° 7, 
1883. 
Scudder. The carboniferous hexapod insects of Great Britain. 
Cambridge. Muséum of comparative zoology. Bulletin ofthe — , 
t. VII, 1883. 
W. Morris Davis. — On the relations of the triassic traps and sandstones of the 
eastern united states. — The folded Heldelberg limestones east of the Catskills. 
Id., t. X, 5 et t. XI, 1 et 2, 1883. 
Indianopolis. Eleventh and twelfth annual reports of the state geo- 
logist of Indiana, 1881-82. 
Newhaven. The american journal of science, t. XXVI, r\°' 151-134, 
juil-oct. 1883. 
Marsh. — Principal characters of american jurassic Dinosaurs; Restoration of 
Brontosaurus, 81. — Supposed human foot-prints recently found in Nevada, 139. 
Miller. -— Response to the remarks of Messrs Wachsmutt and Springer on the 
gênera Glyptocrinus and Reteocrinus, 105. 
White. — Commingling of ancient faunal and modem floral types in the Lara- 
mie group, 120. 
Newberry. — Note on some fossil plants from northern China, 123. 
T. S. Hunt. — The decay of rocks geologically considered, 190. 
Hague and Iddings. — Volcanoes of northern Galifornia, Oregon and Washing- 
ton territory, 222. 
.Groll. — Some controverted points in geological climatology, 219. 
Mo. Gee. — Origin and hade of normal faults, 294. 
Walcott. — Injury sustained by the eye of a trilobite at the time of the moul- 
ting of the shell, 302. 
Williams. — Dip of the rocks in central New- York, 303. 
Philadelphia. Academy of natural- sciences of — . Proceedings of 
the —, 1883, N° 1, janv.-mai. 
Lewis. — On a supposed human implement from the gravel at Philadelphia, 40. 
Heilprin and Lewis. — The ice of the glacial period, 46. 
Cope. — On a new extinct genus of Sirenia, from Soulh Galifornia, 58. — On 
