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Salisbury, Rollin D. 
2113. The Illinois geological survey. — Jour. Geology, vol. 14, no. 1, pp. 65-67, 
1906. 
Reviews the history of the state geological surveys in Illinois and describes the 
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2114. Glacial geology of the Bald Mountain and Dayton quadrangles, Wyo- 
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2115. Glacial geology of the Cloud Peak and Fort McKinney quadrangles, 
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2116. Glacial geology of the Bighorn Mountains. — U. S. Geol. Survey, Prof. 
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2117. Physiography. New York, Henry Holt and Company, 1907. 770 pp., 
26 pis., 707 figs. 
A general treatise intended for students of early college or normal school grade. 
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Sample, Clarence C. 
2118. Amber in Santo Domingo. — Eng. and Min. Jour., vol. 80, pp. 250-251, 
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Gives notes upon the geology of the island, and describes the amber-bearing strata, 
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2119. Record of deep-well drilling for 1905: well records. — U. S. Geol. Sur- 
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2120. Erdbebenserie von Masaya (Nicaragua) 1. bis 5. Januar, 1906. — Cen- 
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Describes a series of earthquakes at Masaya, Nicaragua, in January, 1906. 
Sardeson, Frederick W. 
2121. The folding of subjacent strata by glacial action. — Jour. Geology, vol. 
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Describes upthrust folds in stratified rocks under glacial deposits and explains how 
they were produced by the movement of glacial ice. 
2122. Galena series.— Geol. Soc. Am., Bull., vol. 18, pp. 179-194, 2 figs., 1907. 
Abstract : Science, new ser., vol. 25, p. 771, May 17, 1907. 
Discusses the distribution, relations, and nomenclature of Ordovician formations of 
the upper Mississippi Valley included in the Galena series. 
Sarle, Clifton J. 
2123. Arthrophycus and Dwdalus of burrow origin. — Rochester Acad. Sci., 
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2124. Preliminary note on the nature of Taonurus. — Rochester Acad. Sci., 
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2125. A preliminary report on the peat resources of Iowa. — Iowa Geol. Sur- 
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2126. Report on tests of Iowa coals made at the Government coal-testing' 
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