DONS. — 21 FÉVRIER-25 AVRIL 1881. 
A. Heilprin. — On some new eocene fossils from ihe Claiborne marine forma- 
lion of Alabama, 211. ~ A' comparison of the eocene Moliusca of the South- 
eastern United States and Western Europe in relation to the détermination of 
identical forms, 217. 
Ch. Wachsmuth and Fr. Spinger. -- Revision of the Paieocrinoïdea, 226. 
— American Philosophical Society. Proceedings of the — , 
t. XVIII, 105 et 106, janv.-mars 1880. 
HalJ. — Relations of the cristalline rocks of Pensylvania to the Silurian 
limestones and the Hudson River âge of the Hydromica schists, 435. 
San Francisco. Annual report of the state mineralogist, by 
H. Hanks, de juin à décembre 1880. 
Washington. Smithsonian contributions to Knowledge, t. XXII, 
1880. 
— Smithsonian Miscellaneous Collections, t. XVI et XVIî. 
— Smithsonian report for 1878. 
— United states Geological and Geographical survey of the terri- 
tories, t. VI, n*» 1, 1881. 
Cope. -— On some nev^ Batrachia and Reptilia from the Permian beds of 
Texas, 79. — On a Wading bird from the Amyzon Shales, 83. — On the 
Nimravidœ and Ganidœ of the miocène period, 165. — On the Vertebrata of the 
Wind river eocene Beds of Wyoming, 183. 
Grande-Bretagne. Londres. Geological magazine (the). New 
séries, décade II, t. VIII, n°' 3 et 4, mars-avril 1881. 
B. Wynne. — On the travelled blocks of the upper Punjab and a supposed 
glacial period in India, 97. 
Davidson and G. Maw. — On the U. Silurian Rocks of Shrophire, with their 
Brachiopoda, 100. 
Dana. — Metamorphism of Massive Çrystalline Rocks, lio, 162. 
Hudleston. — Contributions to the Paîœontology of the Yorkshire Ooli- 
thes, 119. 
Ussher. — Prehistoric Europe and the Cornish Forest-beds, 131. 
Kinahan. — Laccolites, 134. 
Davidson. — New Upper Silurian Brachiopoda from Shropshire, 145. 
Dawson. — Geology of British Columbia, 156. 
Herries. — The Bagshot beds, 171. 
Lamplugh. — On a shell-bed under the Drift at Speeton near Filey, York- 
shire, 174. 
Rupert Jones. — On the Carboniferous System in Britain, 181. 
— Geological Society. The quarteriy Journal of the —, t. XXXVII, 
part. I, n° 145, févr. 1881. 
Phillips. — On the Occurrence of remains of Récent Plants in Brown Iron- 
ore, 1. — On the constitution and history of grits and Sandstones, 6. 
Kendall. — On the interglacial Deposits of West Cumberland and North 
Lancashire, 29. 
