Kepoet on the Mines and Mining- Exhibit. 319 



The map will be found in the pocket of the cover of the book and 

 the legend will explain the various tints and symbols used. 



Under the head of the economic minerals of New York may be 

 enumerated iron, stone and slate for building and other purposes, clay 

 for brick, terra cotta, drain pipes, etc., lime and cement, salt, gypsum 

 for fertilizer, petroleum and natural gas, mineral paints, talc used in 

 the manufacture of paper, graphite for crucibles, pencils and other 

 uses, feldspar for pottery, garnet for sand paper, and the seemingly 

 inexhaustible supplies of mineral water from the numerous well-known 

 springs. 



In the following pages will be found lists of the specimens exhibited 

 and references to the publications which may be consulted for detailed 

 information on the various materials. Some general facts are given in 

 cases where nothing recent has been printed. The materials are 

 arranged in the order of the official classiiieation as follows : 

 Group 42. — Systematic collection of minerals. 



43. — Petroleum. 



44. — Building stones, road metal and the geological obelisk. 



45. — Garnet for sand paper. 



46. — Graphite, clays, quartz and feldspar. 



47. — Lime and cement. 



48. — Salt, gypsum and mineral waters. 



49. — Iron ores. 



EEPOET ON THE SYSTEMATIC COLLECTION OF MIN- 

 EEALS EXHIBITED BY THE NEW YOKK STATE 

 MUSEUM AT THE WOELD'S COLUMBIAN EXPOSITION. 



By LEA M. LUQUEE, C. E. 



GKOUP 42. 



All the minerals exhibited were from localities in New York State, 

 and were selected from specimens in the State Museum, many being 

 taken from the old Beck collection. An effort was made to have as 

 many species as possible from the State represented. 



The minerals were arranged in three table cases, ten by five feet, and 

 one wall case, ten by seven feet. A special case was sent out from the 

 museum for the exnibition of a very large and magnificent specimen 

 of green fluorite from McComb. In the table cases the specimens 

 were arranged on black cardboard mounts, each with its printed label, 

 giving name of species, variety and locality. At the head of each 

 species was a large label giving its name, chemical composition and sys- 

 tem of crystallization. The classification followed was that used in 

 Dana's " System of Mineralogy " for the silicates, and an economic 

 classification for the ores. The specimens in the wall case were placed 

 on adjustable iron brackets, after the manner of the new natural his- 



