DONS. — SÉANCES DU 3 NOVEMBRE AU 21 DÉCEMBRE 1891 127 
On the contrast in color of the soils of high and low latitudes, p. 72-82. — Jos. F. 
James : The Fauna of the Lower Cambrian or Olenellus zone, p. 82-86. — J. M. 
Clark : The Fauna with Goniatites intumescens, p. 86-105. — G. C. Hoffman : On a 
peculiar form of metallic Iron found in Huronian quartzite, on the North Shore of 
S. Joseph Island, Lake Huron, Ontario, p. 105-110, pl. I. — T. G. Chamberlin : The 
attitude of the Eastern and Central Portions of the United States during the Glacial 
Period, p. 267-275. — T. Mellard Reade : An Outline of M. Mellard Reades Theory 
of the Origin of Mountain-Ranges by sedimentary loading and cumulative 
récurrent expansion: in answer to recent criticisms, p. 275-287. — G. F. Matthew : 
Notes on Cambrian Faunas, p. 287-291. — P. Crawford : Evidences of a glacial Epoch 
in Nicaragua, p. 308-314. — J. Lawton Williams : On Cycles of Sédimentation, 
p. 315-324. — James P. Kimball : Genesis of Iron-Ores by Isomorphous and Pseu- 
domorphous Replacement of Limestone, p. 352-376. — E. N. Eaton : The Winnebago 
Meteorite, p. 385-387. 
New-Haven. — The American Journal of Science, 3 d ser., 
vol. XLII, n os 251-252, 1891. 
A. M. Edwards : Report of the Examination by means of the Microscope of 
Specimens of Infusorial Earths of the Pacific Coast of the United States, p. 369-385. 
— E. H. S. Bailey : The Tonganoxie Meteorite, p. 385-3S7, pl. XIII. — W. F. 
Hillebrand : New Analyses of Uraninite, p. 390-394. — R. Ellsworth Call : The 
tertiary Silicified Woods of Eastern Arkansas, p. 394-401. — W. II. Wead and 
L. V. Pirsson : Occurence of Sulphur Orpiment and Realgar in the Yellowstone 
National Park, p. 401-405. — L. V. Pirsson : Mineralogical Notes, p. 405-409. — J. F. 
Kemp : Peridotite Dikes in the Portage Sandstones near Ithaca, N. Y., p. 410-412. 
— A. E. Foote : New Locality for Meteoric Iron with a Preliminary Notice of the 
Discovery of Diamonds in the Iron, p. 413-417, pl. XIV-XV. — M. E. Wadsworth : 
The South Trap Range of the Keweenawan Sériés, p 417-119. — A. Cary : Geolo- 
gical Facts noted on Grand River, Labrador, p. 419-421. — J. D. Dana : Percival’s 
Map of the Jura-Trias trap-bells of Central Connecticut, with observations on the 
upturning, or mountain-making disturbance, of the Formation, p 439-447, pl. XVI. 
— F. P. Dunnington : Distribution of Titanic Oxide upon the surface of the Earth, 
p. 491-495. — C. Luedeking and H. A. Wheeler : Notes on a Missouri Barite, 
p. 495-498. — A. C. Lane, II. F. Relier and F. F. Sharpless : Notes on Michigan 
Minerai, p. 499-508. 
New-York. — Transactions of the New-York Acaclemy of Sciences, 
vol. X, n os 4-6, 1891. 
Gilman S. Stanton : The occurrence of Béryls and Carnets on New-York Island, 
p. 50-51. — J. Francis Williams: Monticellite, a new minerai, p. 70. 
Philadelphia. — Proceedings of the Academy of Natural Sciences 
of Philadelphia, 1891, part II. 
O. C. Marsh : Note on Mesozoic Mammalia, p, 237-241. — Ch. B. Keyes : Fossil 
Faunas in central Jowa, p. 242-2G5. — G. A. Kœnig : On Paramelaconite and llie 
associated minerais, p. 284-291. — A. E. Foote : Geological (ratures of the Meteoric 
Iron Locality in Arizona, p. 407. 
