320 New Yoke at the"Woeld's Coxttmbian Exposition- 



tory museum in "Vienna. Among the large specimens in this case 

 were the immense pyroxene crystals from Chilson Hill, specimens of 

 amphibole, hexagonite, calcite, dolomite, spinel, tourmaline, quartz, cel- 

 estite, stilpnomelane, mica, iron ores, etc. 



The following suites of mineral in the table cases deserve special 

 mention : 



The twinned calcite crystals from Kossie, collected by Prof. E. 

 Emmons. These crystals are exceedingly beautiful, and probably the 

 best specimens ever collected from this locality belonging to the State 

 Museum. No unmodified rhombohedi-a are found in the collection, 

 and simple scalenohedra are not common. All the crystals are twinned, 

 many being of the most complex form. The twins are usually parallel 

 to the basal pinacoid. A peculiar feature of all the crystals is that the 

 faces of the unit rhombohedron and the base are roughened, while the 

 other faces are highly polished : 



The brown tourmaline crystals from Newcomb, Essex county. Some 

 of the finest dark brown tourmalines yet found have come from this 

 locality, and occur in crystalline limestone. Many of the crystals are 

 of very large size, and are remarkably fresh in appearance. The gen- 

 eral habit of the crj'stals is short and stout, and no new or even rare 

 faces have been observed. The brown tourmalines from Gouverneur, 

 and the beautiful black tourmalines from Pierrepont, also deserve 

 special mention : 



The pyroxene crystals from Chilson Hill, Ticonderoga, the site of the 

 old graphite mine of the American Graphite Company. These pyrox- 

 enes are peculiar on account of their size, inclusions and external 

 appearance. Two of the largest crystals ever found in the State, and 

 said to be the largest ever found in the world, were exhibited in the 

 wall case. The largest measures thirty-six inches in circumference, 

 and eighteen inches in length. Both crystals have the prism planes 

 perfectly developed, the basal planes lacking, and are badly decom- 

 posed. Calcite, quartz and graphite appear commonly as inclusions. 

 From this locality must also be mentioned the quartz crystals,- which 

 have the appearance of being water-worn, or^ as denominated by 

 Emmons and others, " fused." 



A large suite of Manhattan Island minerals was also exhibited, 

 including the rare species, monazite, xenotime and dumortierite. 



The following minerals were also interesting on account of the num- 

 ber and beauty of the specimens : Magnetite crystals from Mineville, 

 spinels from Amity, quartz crystals from Herkimer county and other 

 localities in the State, ru tiles from the prison quarry, Sing Sing, fluorites 

 from McComb and harmotomes from Sing Sing. 



