20 
DONS. 
DU 17 JUIN AU 3 NOVEMBRE 1890 
Vol. XIX, n° 4, 1890. 
W. G. Binney : A Third Supplément to tlie Fifth volume of the Terrestrial Air- 
Breatliing Mollusks of the United States and adjacent Terri tories, p. 183-225, 11 pl. 
Vol. XX, n° 2, 1890. 
Alexander Agassiz : On the rate of growth of Corals, p. 61-62, 4 pl. — John H. 
Sears : On Iteratophyre from Marhlehead Neck, Massachussets, 1890. 
Maryland. — Transactions of the Maryland Academy of 
Sciences, 1888. 
P. R. Uhler : Observations on the Eocene Tertiary and its Cretaceous Associates 
in the State of Maryland, p. 11-32 — Id.: Additions to observations on the cretaceous 
and eocene formations of Maryland, p. 45-72. — Id.: Notes and Illustrations to «Obser- 
vations on the cretaceous and eocene formations of Maryland », p. 97-104, pl. I. 
Minnesota. — Bulletin of tlie Minnesota Academy of Natural 
Sciences. Vol. III, n° 1, 1889. 
A. F. Bechdolt : Noies on the local geology of Mankato, p. 58-63. — N. H. Win- 
chell : Notice of the discovery of Lingula and Paradoxides in the red quartzites of 
Minnesota, p. 103-105. — C. W. Hall : The lithological characters of the Trenton 
limestone of Minneapolis and Saint Paul, p. 111-124, pl. 1. — C. W. Hall : The 
geological conditions which control Arlesian well boring in southeaslern Minnesota, 
p. 125-143, pl. II. — John B. Leiberg : Some notes upon the more recent fossil flora 
of North Dakota and an inquiry into the causes that liave led to the développement 
of the treeless areas of the Northwest, p. 145-151. — Warren Upham : Description of 
maps showing the climate, geography and geology of Minnesota, p. 151-155. 
New Haven. — The American Journal of Science. Vol. XL, 
no 235-238, 1890. 
W. J. Mc Gee : Southern Extension of the Appomatox Formation, p. 15-42. — 
J. F. Kemp : Notes on the Minerais occurringnear Port-Henry, p. 62-64. — R. T. Ilill : 
Occurrence of Goniolina in the Comanche Sériés of the Texas Cretaceous, p. 64-66. — 
G. E. Beeclier : Development of the Shell in the genus Tornoceras Hyatt, p. 71-75, 
pl. I. — J. P. Iddings and S. L. Penfield : Fayalite in the obsidian of Lipari, p. 75-78. 
— S. L. Penfield : Connellite from Cornwall, p. 82-86. — F. A. Genth : Contributions 
to Mineralogy, n° 48, p. 114-120. — George II. Stone : Classification of the Glacial 
Sédiments of Maine, p. 122-145. — W. W. Dodge : Some Lower Silurian Graptolites 
from Northern Maine, p. 153-155. — James P. Iiimball : Siderite-basins of the Hudson 
River Epoch, p. 155-160, pl. VI. — O. C. Marsh : Notice of some Extinct Testu- 
dinata, p. 177-179, pl. VII, VIII. — J. D. Dana : Rockj Mountain Protaxis and the 
Post-Cretaceous Mountain-making along its course, p. 181-196. — F. A. Genth a. 
S. L. Penfield : Contributions to Mineralogy, n° 49, with Crystallographic Notes, 
199-207. — S. L. Penfield : Chalcopyrite crystals from the French Creek Iron Mines, 
p. 207-211. — Charles E. Beeclier: Koninckina and related Généra, p. 211-219, pl. II. 
— J. -B. Tyrrell : The Cretaceous of Manitoba, p. 227-232. — Louis V. Pirsson : On 
Mordenite, p. 232-237. — Daniel W. Langdon, J r : Geology of Mon Louis Island, 
Mobile Bay, p. 237-238. — Charles E. Beecher : On Leptænisca, a new genus of 
Brachiopod from the Lower Helderberg group, p. 238-240, pl. IX. — Id.: North 
American Species of Strophalosia, p. 240-246, pl. IX. — Erwin II. Barbour and 
