22 The American Geologist. -inly, 1893 
Some Peculiar Screw-Like Casts from the Sandstones of the Che- 
mung Group of New York and Pennsylvania. — Idem, pp. 33-34. 
Discussion of Dr. N. L. Britton's Observations on the Geology of the 
Vicinity of Golden, Colo. It/em, \>. 77. 
The Deposition of Ores.— School of Mines Quarterly, Vol. V, 1884. 
Notes on the Geology and Botany of the Country Bordering the 
Northern Pacific Railroad.— Annals N. Y. Acad. Sci., Vol. Ill (1884 1. 
The Drift Deposits of Indiana. — Annual Report of the State Geolo- 
gist of Indiana (1881), p. 85. 
1885. 
The Eroding Power of Ice. — School of Mines Quarterly, Vol. VI 
(January, 1885). 
Description of Spiraxis, a Peculiar Screw-like Fossil from the Che- 
mung Rocks.— Annals N. Y. Acad. Sci., Vol. Ill, No. 7 (June, 1*85). 
The Ancient Civilizations of America. — Trans. N. Y. Acad. Sci., Vol. 
IV (1885), p. 47. 
Saporta's Problematical Organisms of the Ancient Seas. — Review, 
Science, June 19. 1885. 
Recent Discoveries of Rock Salt in Western New York. — Trans. N. 
Y. Acad. Sci., Vol. IV (1885), p. 55. 
Od the Fossil Plants of the New Jersey Cretaceous. — Bull. Torrey 
Bot. Club, XII, p. 124. 
The Meeting of the Geological Congress at Berlin, 1885. — Trans. N. 
Y. Acad. Sci., Vol. V( 1885). 
Biographical Sketch of Prof. Louis Agassiz. — Address delivered at 
Cornell University, 1885. 
On the American Trias.— Trans. N. Y. Acad. Sci., Vol. V (1885), p. 18. 
On the Geological Age of the North Atlantic. — Trans. N. Y. Acad. 
Sci., Vol. V( 1885), p. 78. 
Placoderm Fishes from the Devonian Rocks of Ohio. — Trans. N. Y. 
Acad. Sci., Vol. V (1885), p. 25. 
On Cone in Cone.— Geological Magazine, Decade III, Vol. II (1885), 
p. 559. 
Pinus monophylla, Torrey and Fremont, a Variety of P. edulis. — 
Bull. Torrey Bot. Club, Vol. XII (1885), p. 50. 
feur les Restes de Grands Poissons Fossils, Recemment Decouverts 
dans les Roches Devoniennes de L'Amerique du Nord. — Comptes 
Rendus de la Troisit'-me Session du Congrt-s Gt'-ologique International, 
Berlin (1885), p. 11. 
New York State Geology and Natural History.— Encyclopedia Bri- 
tannica, 9th Edition, Vol. XVII. 
1886. 
Winds and Ocean Currents. — Science, January, 188(5. 
Uneducated Reason in the Cicada.— School of Mines Quarterly, Vol. 
VII (1886), p. 152. 
Flora of the Amboy Clays.— Bulletin Torrey Botanical Club, Vol. 
XIII (1886), p. 33. 
