382 Proceedings of Societies. [June, 
enlarged, with numerous full-page illustrations and exquisite wood-cuts 
drawn by Kretschmer, Miitzel, and Schmidt. The work is to be pub- 
lished in from forty to forty-five parts, of which ten have been received 
in this country, a part being issued every week or fortnight. The work 
has received the notice and praise of Darwin, Carus, Dr. Petermann, 
Von Tschudi, and Dr. Rohlfs. The subscription price in Germany is 
one mark (or about twenty-five cents). The agents for the United 
States are B. Westermann & Co., 524 Broadway, New York. 
PROCEEDINGS OF SOCIETIES. 
NATIONAL Acapremy or Scrences. Washington, April 17—20. — 
The following new members were elected: Elliott Coues, U. S. A., 
Washington, D. C.; J. W. Draper, New York; Henry Draper, New 
York ; S. H. Scudder, Cambridge, Mass. ; C. S. Peirce, Cambridge, Mass. 
Following are the titles of the papers on natural science: On the 
Young Stages of some Osseous Fishes, the Results of Deep-Sea Dredg- 
ings, by Alexander Agassiz; On Critical Periods in the History of 
the Earth, and their Relations to Evolution, and on the Quarternary at 
such a Period; On the Structure of the Crystalline Lens and its Rela- 
tive Periscopism, by Joseph Le Conte; On the Structure of the Henry 
Mountains, by G. K. Gilbert; On the Public Domain, by J. W. Pow- 
ell; Remarks on some Artesian Wells along the Line of the Union 
Pacific Railroad in Wyoming Territory, by F. V. Hayden 
AMERICAN Puitosopnrcat Society. Philadelphia, January 5, 
1877. — Mr. Britton exhibited specimens of artificial fuel manufactured 
from the peat-bogs near Syracuse, New York, and remarked its resem- 
blance to the lignite of southwest Arkansas. Professor Lesley read char- 
acteristic portions of a paper by Mr. Lesquereux, introductory to the 
Flora of the Carboniferous of North America, now in preparation for 
the Report of Progress of the Second Geological Survey of Pennsylvania. 
January 19, 1877. — Professor Lesley presented a paper on the first 
systematic collection and discussion of the Venango Company Oil Wells 
of Western Pensylvania, by E. S. Nettleton, C. E. General Kane read 
a description of his recent explorations in Coahuila, exhibiting photo- 
graphs of Mexicans and describing the migrations of Indians. 
February 2, 1877. — Professor Cope exhibited some fragmentary cra- 
nia of Dinosauria from the Judith River beds of Montana, and described 
their structural and systematic characters. He also read a paper en- 
titled A Continuation of Researches among the Batrachia of the 
Measures of Ohio. 
February 10, 1877. — The secretary read a paper by Alexander E. 
Outerbridge, Jr., on the Wonderful Divisibility of Metallic Gold. Pro- 
fessor Lesley read a communication entitled, A Measured Section of the 
Paleozoic Rocks of Central Pennsylvania from the Top of the Alle- 
