University of the State of New York 



New York State Museum 



Frederick J. H. Merrill Director 



Bulletin 61 



ECONOMIC GEOLOGY i i 



QUAREIES OF 



BLUESTONE AND OTHER SANDSTONES 



IN THE 



UPPER DEVONIAN OF NEW YORK STATE 



PREFACE 



The first official study of the building stones of New York 

 was made by Dr James Hall, state geologist, in preparation for 

 a report to the commissioners of the new state capitol in 1868. 

 His examination of the building stones available for this great 

 building led to the formation of a collection of large cubes 

 dressed on different sides to show various modes of treatment, 

 which is now the nucleus of a large collection in the Geological 

 hall. 



In 1886 Prof. John C. Smock took up the study of the build- 

 iDg stones of New York and in bulletins 3 and 10 of the New 

 York state museum, contributed copiously to our accurate 

 knowledge of the resources of New York state in this sort of 

 building material. 



With the lapse of time it becomes necessary to enlarge our 

 descriptions and records and it is now proposed to bring up to 

 date our knowledge of the subject of building stones. 



This has, however, grown to such an extent that it seems 

 hopeless to treat it all in one volume or publication. It is 

 intended, therefore, to issue, as time and means will permit, sep- 

 arate bulletins discussing various types of this important 

 material. The first contribution is the following one on that 

 valuable and important variety of sandstone known as bluestone 

 and on rocks of allied character. 



Frederick J. H. Merrill 



July 1902 



