24 I'ln American Geologist. July, 1898 
A New Species of Rhizodus from the Mountain Limestone of Illinois. 
Trans. X. V. Acad. Sci., Vol. VII (1888), p. 1';:.. 
The Fossil Fishes of the Erie Shale of Ohio.- Trans. X. Y. Acad. Sci., 
Vol. VII (1888), p. ITS. 
The Pavements of the < treat Cities of Europe, with a Review of the 
[Jest Methods and Materials for the City of New York.— Trans. X. Y. 
Acad. Sci., Vol. VIII (1888), p. 41. 
The Future of Gold and Silver.— School of Mines Quarterly, Vol. IX 
lisys,, ,,. 08. 
The Origin of the Loess.— School of Mines Quarterly. Vol. X (1888), 
p. 66. 
Marble Deposits of the Western United States. — School of Mines 
Quarterly, Vol. X (18881, p. 69. 
Triassic Plants from Honduras. — Trans. X. Y. Acad. Sci., Vol. VII 
(1888), p. 113. 
The Xew Oil Field of Colorado and its Bearing on the Question of 
the Genesis of Petroleum. -Trans. N. Y. Acad. Sci., Vol. VIII (1888), p. 35. 
Rha>tic Plants from Honduras. — Amer. Jour. Sci., Vol. XXXVI 
(1888), p. 310. 
The Classification of American Palaeozoic Rocks. — Report of Amen 
Com. to the International Geological Congress (188!-' i. 
1889. 
The Oil Fields of Colorado.— School of Mines Quarterly, Vol. X (Jan- 
uary, 1889), p. 97. 
The Pavements of Xew York. — School of Mines Quarterly, Vol. X 
(1889). 
The Man of Spy. Xotice of the recent discovery of two nearly com- 
plete skeletons of palaeolithic men in the gravel of Spy, near Liege, 
Belgium.— Science, March 29th, 18S9. 
Biographical Sketch of Dr. Barnard. — Report of the Regents of the 
University of the State of Xew York, 1889. 
Ancient Mining in Xorth America. — American Antiquarian, Vol. XI 
(1889), p. 164. 
Coal vs. Xatural Gas. — Black Diamond, Aug. 3rd, 1889. 
The Laramie Group. Its Geological Relations, its Economic Impor- 
tance and its Fauna and Flora. — Trans. X. Y. Acad. Sci., Vol. IX, Xo. 
1, 8vo, pp. G (1889). 
The Rock Salt Deposits of the Salina Group in Western Xew York. 
Trans. N. Y. Acad. Sci., Vol. IX, Xo. 2 (1889). 
The Palaeozoic Fishes of Xorth America. — Monograph XVI, U. S. 
Geological Survey (1889), 4to, pp. 228, Plates 53. 
Devonian Plants from Ohio.— Journ. Cincinnati Soc. Xat. Hist., XII r 
pp. 4N-54. 
Remarks on Fossil Plants from the Puget Sound Region. — In Bull. 
U. S. G. S., Xo. 51. p. 51 (On Invertebrate Fossils from the Pacific 
Coast, by C. A. White). 
1890. 
The Origin of Coal.— N. Y. Tribune, Feb. 13th. 1890. 
