REPORT OF THE DIRECTOR AND STATE GEOLOGIST 1901 r99 



. has been conducted in histories of the various counties and old 

 maps. 



The work of compilation has involved reference to the follow- 

 ing authorities: 



Beck, Lewis C. Natural History of New York; Mineralogy. 

 1842 



Cleveland, P. Elementary Treatise on Mineralogy and Geology. 

 1822 



Dana, E. S. Textbook of Mineralogy. 1898 



Dana, J. D. System of Mineralogy. Ed. 6. 1892 



Manual of Mineralogy and Lithology. 1884. 



Fletcher, L. British Museum List of Meteorites. 1888 



Ries, H. The Monoclinic Pyroxenes of N. Y. State. N. Y. Acad, 

 of Sci. Ann. June 1896 



Smock, J. C. N. Y. State Museum bulletin 7 



The work of compilation has been further supplemented by 

 visits to several of the mineral localities, reconnaissance work 

 and field notes. The index has already proved of some value in 

 the collecting work of the department, and will constitute a 

 basis for a type collection of New York minerals, which it is 

 planned to form from duplicate material as soon as there is 

 adequate space. 



2 The curatorial work of the department may be classed as 

 follows: 



a The principal collection installed in the wall cases has been 

 completely rearranged, added to and disposed to give more 

 prominence to the more valuable material and also to show in 

 the outer lines of specimens a representative series involving all 

 the species and varieties represented in the collection and ar- 

 ranged in accordance with the system of J. D. Dana. Care has 

 been taken to display the best of the material available as well 

 as the most characteristic occurrences and associations. A set 

 of 128 explanatory cards, giving a brief description of the more 

 important species, has been distributed throughout the collec- 

 tion, and a set of Krantz crystal models in wood, carefully 

 selected to show the more common crystal forms, has been like- 



