GEOLOGICAL SURVEY PUBLICATIONS ON STONE. 
Bain, H. F. Notes on Iowa building stones. In Sixteenth Ann. Rept., Pt. IV, 
| pp. 500-503. 1895. 
Dale, T. Nelson. The slate belt of eastern New York and western Vermont. 
In Nineteenth Ann. Rept,. Pt. Ill, pp. 153-200. 1899. 
Hillebrand, W. F. Chemical notes on the composition of the roofing slates 
of eastern New York and western Vermont. In Nineteenth Ann. Rept., Pt. Ill, 
pp. 301-305. 1899. 
Hopkins, T. C. The sandstones of western Indiana. In Seventeenth Ann. 
Rept., Pt. Ill, pp. 780-787. 1896. 
Brownstones of Pennsylvania. In Eighteenth Ann. Rept., Pt. V, pp. 
1025-1043. 1897. 
Hopkins, T. C, and Siebenthal, C. E. The Bedford oolitic limestone of 
Indiana, In Eighteenth Ann. Rept., Pt. V, pp. 1050-1057. 1897. 
Ries, H. The limestone quarries of eastern New York, western Vermont, 
Massachusetts, and Connecticut. In Seventeenth Ann. Rept., Pt. Ill, pp. 795-811. 
Shaler, N. S. Preliminary report on the geology of the common roads of the 
United States. In Fifteenth Ann. Rept., pp. 259-306. 1895. 
The geology of the road-bnilding stones of Massachusetts, with some 
consideration of similar materials from other parts of the United States. In 
Sixteenth Ann. Rept., Pt. II, pp. 277-341. 1895. 
Siebenthal, C. E. The Bedford oolitic limestone [Indiana]. In Nineteenth 
Ann. Rept., Pt. VI, pp. 292-296. 1898. 
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