II.-WORKS IN PROCESS OF PUBLICATION.
Seventh Annual Report of the United States Geological Survey of the Territories,embracing Colorado , being a report of progress of the explorations for the year1873. By F. V. Hayden, United Stales Geologist . Conducted under the au-thority of the Secretary of the Interior. [8vo.]
CONTENTS.
Letter to the Secretary, pp. 1-14.
Parti. Geology, mineralogy, and mining industry, p. 15-Report of F. V. Hayden, U. S. Geologist, pp. 17-82.
Report of Arch. R. Marvine, Assistant Geologist directing the MiddlePark Division, pp. 83-192.
Rpport of A. C. Peale, M. D., Geologist of the South Park Division, pp.i93- 2 73-
Report of F. M. Endlich, S. N. D., [Geologist of the San Luis Division. ]PP- 275-361.
Part II. Special reports on paleontology, p. 363.
The lignitic formation and its fossil flora. By Leo Lesquereux . pp.365-425.
Report on the vertebrate paleontology of Colorado. By Edward D. Cope ,A. M. pp. 427-536.
[With “Appendix ” to Chapter II, pp. 455-456, viz: “Descriptionsof new mollusks from Cretaceous beds of Colorado , by T. A.Conrad.”]
1. Report of Lieut. W. L. Carpenter on the collections made by him
in 1873 while connected with the United States Geological Survey.PP- 537-538-
2. Destruction of pine-timber in the Rocky Mountains , [m connection
with insects.] By Lieut. W. L. Carpenter, U. S.A. pp. 538-539-
3. Report on the alpine insect-fauna of Colorado . By Lieut. W. L. Car-
4. List of species of butterflies collected by Lieut. W. L. Carpenter,
U. S. A., for the United States Geological Survey of Colorado , 1873.By W. H. Edwards , p. 542.
5. On the geographical distribution of the moths of Colorado . By A. S.
Packard, jr., M. D. pp. 543-560.
6. Report on the diptera collected by Lieut. W. L. Carpenter in Colorado
during the summer of 1873. By C. R. Ostensacken. pp. 561-566.
7. Notice on the galls collected by Lieut. W. L. Carpenter. By C. R.
Ostensacken. p. 567.
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