544 The American Naturalist. [June, 
RECENT BOOKS AND PAMPHLETS. 
ALLEN, J. A.—The Geographical Distribution of North American Animals, Bull. 
Am. Mus. Nat. Hist., Vol. IV, No. 1, Art. XIV, 1892. From the author 
Bascock, E. J.—Clays of Economic Value in North Dakota. laine by H. L 
Helgesen, State Commissioner of Agriculture and Labor, Bismark, 1892. From the 
author. 
Bulletin No. 19, Iowa Agricultural Experiment Station, 1892. 
Rae me 87, North Carolina Agri. Exp. Station, Nov., 18 
, E. W.—On the Structure of the American Pteraspidian, rege 
(Claypole) eit remarks on the Family. Extr. Quart. Journ. Geol. . Vol. 
ee 1892. From the author 
AFERT, E. W.—On the Hinataa z Minerals of High 2 Gravity. Extr. 
a Foha Acad. of Sci., Vol. II, 1893. From the a 
Duces, Dr. A.—Un Nuevo Ixodideo. Eiti. La Naturaleza, pe ‘ead: S. 2a. From 
the author. 
DUMELE, E. T.—Notes on the Geology of the Rio Grande. Bull. Geol. Soc. Am., 
Vol. III, EAE í 
Do.; Re n the Brown Coal and Lignite of Texas. Character, Formation, 
Occurrence en Fuel Uses, 1892, From the Texas Geological Survey. 
EA .—Revision of the Species of Coryphodon. Extr. Bull. Am. Mus. Nat. 
Hist., Vol. IV, No. 1, Art. XII. From the author 
EVERMANN, B. W.—Description of a New Sucker, Pantosteus jordanit, from the 
Upper Missouri Basin. Extr. Bull. U. S. Fish Com., 1892. Date of pub., Jan. 27, 
1893. From the author. 
FARQUHAR, H.—Competition and oo in Nature. Extr. Proceeds. A. A 
A. S., Vol. XLI, 1892. From the a 
FRAZER, P.—Biographical Sketch P ioni Sterry Hunt. Extr. Am. Geol., Jan., 
1893. From the author. f 
GALLOWAY, B. T.—Report on the Experiments made in 1891 in the Treatment © 
Plant Diseases. Bull. No. 3. Div. Veg. Path. U. S. Dept. Agri. From th he Sain 
sonian Institution, 
HATCH gi .—The Ceratops Beds of Converse County, Wyoming. Extr. Am. 
Journ. Sci., Vol. XLV, 1893. From the author i 
HENDERSON, C. H.—The First Cretaceous Fold of the Alps between the Linth 
and the Sihl. D Dissertation Presented to the Philosophical Faculty of the 
University of Zürich, for the Degree of Doctor of Philosophy, 1892. 
author. 
Herrick, C. L.—Additional Notes on the Teleost Brain. Separat-Abdruck Anat 
Anzeiger, 1892, No. 13 and 14. 
——Notes upon the Histology of the Central Nervous System of Vertebrates. es 
arat-Abdruck aus der Festschrift zam siebenzigsten Geburtstage Rudolf Leuckart — 
From the author a 
Hicks, L. eee elements of Land Sculpture. Extr. Bull. Geol. Soc. 
Vol. IV, 1893. From the Society. 
From the 
