STUDIES PORT SRODENIES 
WSUS INOMSIRIINTS, Ol8 IVIICIDIUNG SOQWISS AINID 
MERHODS7OF DETRERMINENG WE DRA VeAvIe Ui 
I. NECESSARY CONSIDERATIONS IN THE SELECTION OF -STONE 
Quarry observations, building inspection, and laboratory 
examination of building stone are conducted to satisfy the 
individual and the public that the stone under consideration 
possesses a color which will remain permanent and inherent 
qualities which give it a capacity to effectually withstand the 
atmospheric and other conditions to which it will be subject 
when in use. 
It is my purpose in this number to discuss: (1) Color; (2) 
the inherent qualities of stone which limit its capacity to with- 
stand atmospheric and other conditions; and (3) the atmos- 
pheric and other conditions to which building stone may be 
subject. Ina following number quarry observations, building 
inspection, and the laboratory examination of building stone 
will be considered. 
‘This subject has been discussed very freely by geologists, architects, and engi- 
neers for twenty or twenty-five years. Many of the ideas expressed in this and the 
following number are a repetition of the conclusions reached by men who have previ- 
ously entered this field of discussion. However, it would be a very uncertain task to 
endeavor to give any one credit for first enunciating the principles herein stated. 
The following is a list of the more important American publications which treat, 
more or less fully, the subject considered in these studies, and to which the reader is 
referred: The Experimental Tests of Building Stones, by ROBERT G. HATFIELD, 
Trans. Am. Soc. of Civil Engineers, Vol. XLVIII, pp. 145-151, 1872; Report on the 
Building Stones of the United States, Appendix of the Annual Report of the Chief 
of Engineers, U.S. A., 1875; Notes on Building Stones, by H1rAM A. CUTTING, Ver- 
mont, 1880; Building Stones of Colorado, by REGIS CHAUVENET, Report of the 
Colorado School of Mines, pp. 1-16, 1884; The Building Stones of Minnesota, by N. 
H. WINCHELL, Report of the Geological and Natural History Survey of Minnesota, 
Vol. I, pp. 142-203, 1884; Special Report on Petroleum, Coke, and Building Stone, 
The Tenth Census of the United States, 1884; Report on Building Stones, by JAMES 
HALL, Thirty-ninth Annual Report of the New York State Museum of Natural History, 
160 
