DONS. — 4 MAI-15 JUIN 1885. 
73 
N'» 174. 
Rockwood. — Notes on American Earthquakes, 425. 
Dana. — Taconic Rocks and Stratigraphy, 437. 
Whiteaves. — Notes on the possible âge of some of the Mezosoic rocks of the 
queen Charlotte Islands and britisch Columbia, 444. 
Penfield. — Crystallised Tiemannite and Metacinnabarite, 449. 
Dana. — Gahnite of Rowe, Mass, 455. 
Meyer. — The Genealogy and the Age of the Species in the southern old-ter- 
tiary, 457. 
Campbell. — The Potsdam Group east of the blue ridge at Balcony Falls, Vir- 
ginia, 470. 
Lindenkohl. — Geology of the Sea-bottom in the approaches to New-York 
Bay, 475. 
Koons. — Kettle-Hales of the Wood'-Holl Région, Mass, 480. 
Williams. — Cause of the apparently perfact cleavage in American Sphene 
(Titanite), 486. 
Philadelphia. American philosophical Society. Proceedings of 
the —, t. XXI (n° 116), 1884. 
Cope. — Sinopsis of the species of Oreodontidae, 1 pl., 503. 
P. Frazer. — Trap dykes in the arch8ean||Rocks of Southeastern Pennsyl- 
vania, 691. 
Genth. — On Herderite, 694. 
Register of papers published in the Transactions and Pro- 
ceedings of the — , compiled by Henry Phillips, Jr. 
— Academy of natural Sciences. Proceedings of the — , 1884, 
Part. ï, janv.-avr, 1884, 
Leidy. — Cassiterite from Black Hills, Dakota, 9. 
Lewis. — A phosphorescent variety ofLimestone, 10. 
Leidy. — FossiJ Bones from Louisiana, 22. 
— Foraminifera in the Drift of Minnesota, 22. 
Heilprin. — On a Carboniferous Ammonite from Texas, 53. 
0. Meyer. — Notes on Tertiary*shells, 104. 
Leidy, — Vertebrate Fossils from Florida, 118. 
; 1885. Part. I (january, february, marsh 1885. 
Kœnig. — A new locality for Begcerite, 19. 
Scudder. — New Gênera and Species of Fossil Cockroaches from the older 
American Rocks, 34. 
Leidy. — Remarks on Mylodon, 49. 
Salem. — Annual reports of the Trustées of the Peabody Academy of Science, 
1874 to 1884. 
Washington. National Academy of Sciences. Memoirs of the — , 
t. II, 1883. 
Grande-Bretagne. Londres. Geological Society of — . Abstracts 
of the Proceedings of the —, 1884-85 (n° 473), 27 mai. 
