— 40 
d’Amin, p. 557. — Desor. Observations, p. 557. — De Tribolei . Note 
sur les tremblements de terre ressentis dans le canton de Neuchâtel 
du 2 avril au 12 mai 1876, p. 558. — Desor. Lettres de MM. Lang 
et Studer sur les tremblements de terre, p. 572. — Otz. Observaiions 
p. 575. 
ÉTATS-UNIS. 
Boston. American academy of arts and sciences. N lie 
série, t. 3. 
— Society of natural history. Proceedings, 1.17; i, 2, 3 
et 4. 
C. Slodder. Note on the loeality of the Bermuda tripoli, p. 120. 
— C. Johnston. On the loeality of the Bermuda tripoli, p. 127. 
— J.-D. Dana. Metamorphism and pseudomorphism, p. 167. — 
S.-L. Burbank. Minerais from Athol, Mass., p. 181. — C.Vïhittlesey. 
Coal seam N° 6, Ohio geology, p. 185. — R.-H. Richards. Newly 
discovered lead vein, Newburyport, Mass., p. 200. — A. Hyatt. Two 
new généra of Ammonites, p. 225. — Biologieal relations of 
jurassie Ammonites, p. 256. — Richard Rathbun. Crelaceous lamel- 
libranchs from near Pernambuco, Brazil, p. 241. — N.-S. Shaler. 
Notes on some of the phenomena of elevaiion and subsidence of the 
continents, p. 288. — A. Hyatt. Jurassic and cretaceous Ammonites 
from South America, p. 565. -- W.-W. Dodge. Notes on the Geology 
of Eastern Massachusetts, p. 588. — J. Sullivant. Letter concerning 
the discovery of Bermuda tripoli, p. 422. -- Miss E. H. Swallow. 
Analysis of Samarskite, p. 424. — Occurrence of boraeic acid in 
minerai water, p. 428. — Chemical composition of some minerai 
species accompanving the lead ore of Newburyport, p. 462. — 
N.-S. Shaler. Notes on some points connected with tidal érosion, p. 
465.— T.Sterry liant. On the Boston artesian well and its waters, 
p. 486. — N.-S. Shaler. Geological relations of Boston and Narra- 
gansetl Bays, p. 488. 
— Id. id., t. 18; 1 et 2. 
W. B. Royer s. On the Newport conglomérâtes, p. 97. — On the 
gravel and cobble-stone deposits of Virginia and the Middle 
States, p. 101. — T. Sterry Hunt. The decayed gneiss of Hoosac 
mountain, p. 106. — J. D. Dana. On the alteration of rocks, p. 
108. — S. H. Scvdder. On fossil insects from Cape Breton, p. 115. 
N. S. Shaler. On the motion of continental glaciers, p. 126. — On 
the cause and geological value of variation in rainfall, p. 176.— 
