456 BULLETIN OF THE UNITED STATES FISH COMMISSION. 



Anodon, with both valves polished and beautifully pearly, from the lake iu Prospect 

 Park in that city. The valves are about G inches long. A number of these splendid 

 Anodons have lately been found in this lake, and the fact that they can thus occur 

 shows how readily these mollusks could be propagated and their shells made an article 

 of commercial value. 



In the Swedish building, Augusta Mollenberg, the royal court jeweler, exhibited 

 twelve fresh-water pearls, weighing from 4 tc 10 grains each, eight mounted on a chal- 

 ice and two on an ecclesiastic? 1 bowl. A Norwegian jeweler exhibited several dozen 

 pearls, white and faintly pink, from Norwegian rivers. 



In the English section of the Manufactures building Edmund Johnson, jeweler 

 royal of Ireland, exhibited several fresh-water pearls, weighing over 10 grains each, 

 from Irish rivers, mounted in a brooch in his collection of representations of Irish 

 gold antiquities. 



In the Mexican section, in the Fisheries building, from the district of Jederal, with 

 a series of pearl shells from the west coast of Nueva Leon, was another of fresh water 

 Unios, some measuring nearly 10 inches in length. 



In the southeastern gallery of the Anthropological building there were displayed 

 about fifty specimens of Unios and mother-of-pearl shells, with one valve of each shell 

 polished. 



In the German section of the Manufactures building, and elsewhere, were shown 

 Unio shells from the Elster, in Saxony, and the Bohemian rivers, frequently polished 

 on both sides and made into beautiful little portmanteaus, satchels, etc. The shells 

 are often ground very thin, so that colored photographs or designs may be shown 

 through them. 



A very interesting series of mounted fresh-water pearls was shown from Wiscon- 

 sin, Tennessee, Ohio, and Texas. Among these are some absolutely white, pink, and 

 brown pearls. All those from Wisconsin are very fine, possessing a marvelous metallic 

 luster. The pearl fisheries of that State have produced at least $250,000 worth of 

 pearls since 1889. 



In the Mining building, Bunde & Upmeyer, of Milwaukee, exhibited a case of 

 several hundred Unio pearls, some of them very fine, of the various colors found in 

 the rivers of Wisconsin. 



The New York State exhibit, in the gallery of the Anthropological building, con- 

 tained a superb collection of Unios, beautifully mounted and well labeled, belonging 

 to the State cabinet. This collection embraces those of the Rev. John Walton, Shelly 

 G. Crump, C. E. Beecher, and others. In the south gallery, forming a portion of the 

 exhibit of Prof. Ward, of Rochester, were some magnificent specimens of Unios. 

 Superb examples of Dipsas plicatus Lea, from Lake Riwa and from central China, 

 containing pearl figures of Buddha and flat pearl-like disks, produced by inserting 

 between the mantle and the shell of the mollusk small tin-foil figures of Buddha, or 

 small hemispherical disks, which in time become coated by the pearly nacre, were 

 shown in the folklore collection of G. F, Kunz and in the Ward collection in the 

 south gallery (see PI. 40), both now in the Field Columbian Museum. 



This method of producing figures and symbols that could be used for ornaments 

 is one that would recompense any American who would produce the same results in 

 some of our richly colored and brilliantly lined Unios. 



