92 BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1906-1907. 
Hay, Oliver P. — Continued. 
1100. On two interesting genera of Eocene turtles, Ghisternon Leidy and 
Anosteira Leidy.— Am. Mus. Nat. Hist., Bull., vol. 22. pp. 155-160, 3 figs., 1906. 
1101. Descriptions of new species of turtles of the genus Testudo, collected 
from the Miocene by the Carnegie Museum ; together with a description of the 
skull of Stylemys nebrascensis. — Carnegie Mus.. Annals, vol. 4, no. 1. pp. 15-20, 
pis., 11 tigs., December, 1906. 
1102. Systematic paleontology of the Pleistocene deposits of Maryland: 
Reptilia. — Maryland Geol. Survey, Pliocene and Pleistocene, pp. 169-170, pi. xl, 
fig. 2, 1906. 
1103. Descriptions of seven new species of turtles from the Tertiary of 
the United States.— Am. Mus. Nat. Hist., Bull., vol. 23, pp. 847-863, 1 pi., 20 
figs., 1907. 
1104. A new fossil stickleback fish from Nevada. — U. S. Nat. Mus., Proc, 
vol. 32. pp. 271-273, 1907. 
1105. A new genus and species of fossil shark related to Edestus Leidy. — - 
Science, new ser., vol. 26, pp. 22-24, 1 fig.. July 5, 1907. 
1106. The turtles of the Bridger basin. — Abstract: New York Acad. Sci., 
Annals, vol. 17, pt. 3, p. 592, 1907. 
Haycock, Ernest. 
1107. [Report on the] geology of parts of the counties of Labelle and Wright, 
Quebec— Canada. Geol. Survey. Summ. Kept, for 1905, pp. 105-112, 1906. 
Gives notes on the general geology and on the occurrence and character of the rocks. 
Hayes, C. Willard. 
1108. The relation of the federal government to the mining industry. — Am. 
Min. Cong.. 8th. Ann. Sess.. pp. 46-59, 1906. 
Includes a brief history of the*tJ. S. Geological Survey and some consideration of its 
relations to the mining industry. 
1109. Contributions to economic geology. 1905: Introduction. — U. S. Geol. 
Survey, Bull. no. 285. pp. 1-13, 1906. 
Explains the purpose and character of the bulletin and describes the different series 
of publications of the I'. S. Geological Survey. 
1110. Introduction to Contributions to economic geology. 1906, part I. — 
U. S. Geol. Survey. Bull. no. 315, pp. 7-13, 1907. 
Includes a list of the folios of the Geologic Atlas of the United States, showing the 
mineral resources described. 
1111. The Gila Liver alum deposits. — IT. S. Geol. Survey, Bull. no. 315, pp. 
215-223, 1 fig., 1907. 
Hayford, John F. 
1112. The geodetic evidence of isostasy. with a consideration of the depth 
and completeness of the isostatic compensation and of the bearing of the evi- 
dence upon some of the greater problems of geology. — Washington Acad, Sci., 
Proc, vol. 8, pp. 25-40, 1906. 
1113. The earth a failing structure. — Philos. Soc. of Washington, Bull., 
vol. 15, pp. 57-74, December, 1907. 
Hayford, John F.. and Baldwin, A. L. 
1114. The earth movements in the California earthquake of 1906.— U. S. 
Coast and Geodetic Survey, Rept. of Superintendent for 1906-7, Appendix 3, 
pp. 67-104, 1907. 
