base metals, marbles and building stones, and abras- 

 ives, alkalies, salts and phosphates. In Hall No. 36, 

 coals, petroleums, and other hydro-carbons and their 

 products, economically important clays, soils and 

 sands are exhibited. Models and diagrams show the 

 method and devices adopted by man in utilizing these 

 substances. 



H. N. HIGINBOTHAM HALL 



Here is displayed one of the most complete collec- 

 tions of gems and jewels in existence, containing, as 

 it does, nearly every known gem or precious stone, in 

 the finest cut examples, as well as crystals, cleavages 

 and rolled grains. Many of the objects are of histori- 

 cal interest and world-wide reputation. Among these 

 is a diamond, on which the bust of William II of Hol- 

 land was engraved by DeVrees of Amsterdam. The 

 Hope aquamarine is a beautiful gem weighing 331% 

 karats. The Tiffany aquamarine should also be in- 

 spected. Among the opals should be noted the famous 

 Sun God Opal from the Hope collection. Special atten- 

 tion should be taken of the Russian topazes, the cut 

 amethysts, and the uncut Chilton emerald crystal. A 

 thin section of rock crystal, 9% inches in diameter, 

 forming a screen on which is engraved "The Finding 

 of Moses," is believed to be the finest thing of its kind 

 in existence. A valuable collection of crystallized and 

 wire gold and gold nuggets is exhibited. 



The nine cases arranged on the walls are worthy of 

 careful inspection. They contain Egyptian and classi- 

 cal jewelry, Greek and Roman cameos and intaglios, a 

 remarkable collection of jewelry from India, and pre- 

 historic American gold ornaments. 



Page Twenty-four 



