1890.] NEW YORK ACADEMY OF SCIENCES. 151 



cury. Besides these there were seventy-five minor exhibits. In 

 this section also was the collection of minerals, partly Ameri- 

 can, exhibited by Prof. A. E. Foote, and a large display of aga- 

 tized trunks and sections of trees, with polished sides, of the 

 jasperized and agatized wood of Arizona, to which was awarded 

 a gold medal. 



A collection of precious and ornamental stones of North Am- 

 erica, as well as a collection of foreign precious stones, was dis- 

 played by Messrs. Tiffany & Co. in the American Section. The 

 former collection was contained in a circular case nine feet in 

 diameter, on a platform erected at the intersection of the four 

 aisles of the American division. This collection was formed for 

 the purpose of illustrating the occurrences of the precious and 

 ornamental stones in North America, and contained many of the 

 finest examples that have been found, some unique, others en- 

 tirely new. This collection was the result of purchase, com- 

 pleted by generous loans from some of our prominent mineralo- 

 gists, and was an object of interest to the many visitors to the 

 Exposition. 



One of the features of the jewelry exhibit was the utilization 

 of American stones and pearls in jewelry, notably tourmaline?, 

 beryls (yellow, green, and blue), rock-crystals for vials and 

 boxes, and pearls from the Unios in a large variety of objects; — 

 the motive as well as the materials employed being American in 

 character. 



Among the more important things in this collection were 

 some small diamonds from California; a series of the original 

 crystals of sapphire collected by Col. C. W. Jenks when he 

 opened the Jenks Mine in Franklin, Macon County, North 

 Carolina, — among them the first sapphire found in the United 

 States; a ruby of fair color, some American crystals and cut to- 

 pazes, from Cheyenne Mountain, Colorado; one of the largest 

 crystals of emerald from Alexander County, North Carolina, 

 loaned by Mr. Bement; the cut aquamarine, weighing 133ff 

 carats, from Stoneham, Maine; thirteen cut aquamarines from 

 Mt. Antero, Colorado, found at an altitude of 14,000 feet above 

 the sea; a number of cut spessartite garnets, one of which 

 weighed 9Gj\ carats, from Amelia Court-House, Virginia; a 

 series of colored tourmalines, both cut and in crystals, from 

 Mt. Mica, and from Auburn, Maine; a collection of pearls, and 

 the shells in which they are found on the shores and in the 

 rivers and brooks of North America. 



Some notable things in the Tiffany foreign collection were a 

 series of twenty-four fancy-colored sapphires, weighing from 

 two to twenty carats, and showing every color of the spectrum; 

 some fine alexandrites, chrysoberyls, and zircons from Ceylon; 



