!()() 



r;A'.\/,s. MiM':h'ALs 



and passing; nortli, case by case, thr()u«»;h ( 'oruiidiiin (Sappliirc), Beryl, 

 (KfNcrdld), Topaz, Tourmaline, ( 'lirysolitc, Sjiincl, Zircon (Jlij(icinlh), 

 Chrysolite (Pcridol), Adularia {Moonstone), Opal, Anietliyst, Kunzite, 

 Aniher, Pearls. In one case a varied collection of semi precious or 

 ornamental stones is shown, many of which are ex])erimental efforts to 

 use mineral material which can ne\'er ha\'e any very extended use, viz., 

 l)rehnite, titanite. s))halerite, hematite, cyanite, etc., etc. 



Handsome wall case s])ecimens of lar^e size line the sides of the Gem 

 room, amon<; which the Azurite, Malachite, (Quartz, Amethyst, Gypsum 

 and Tourmaline ai'c pi-e-eminent for size or heauty. 



SOUTHWEST WING 

 Minerals 



Next beyond the (Jem Hall is the Southwest Wing or Hall of Minerals. 

 At the entrance to the hall is a case in which recent acquisitions are 

 Bement placed. The <2;eneral collection of minerals consists cliiefly 



Collection of the well-known Bement Collection which contains speci- 



of Minerals nu^ns representing species of the known minerals of the 

 world. Not only is the collection noted for its numbers, but in many 

 instances the beauty and size of the individual specimens are quite un- 

 surpassed in other collections. 



The more attractive specimens are displayed in cas(\s arranged down 

 the center of the room. The remainder of the collection is arranged 

 according to the classification of minerals. In the first cases on the 

 right or left are models of the six systems of crystals and other intro- 

 ductory illustrations of the physical and optical properties of minerals. 

 Each mineral has a characteristic form of crystallization wdiich is one of 

 the means of identifying it. The distribution of th(^ mon^ important 

 minerals is indicated on maps. 



PEARLS FROM FRESH WATER MUSSELS 



