MOLECULES FROM THE DENVER MINING EXPOSITION. 251 



its definite size is not yet ascertained. The cost of getting out of the mine of a 

 single mass to be exhibited from Gunnison county, Colorado, will be $500. 



It must be borne in mind too, that these are merely samples, selected to give 

 an idea of the ore to be shown in bulk, and they are but a small part of the great 

 and interesting masses to be seen at the buildings during the next two months. 



California will exhibit a great many specimens of gold ores; copper and 

 silver will come from the new discoveries of the Corriza mines near El Paso, 

 Texas ; Utah has en route three car loads of mineral exhibits ; Gunnison county, 

 Colorado, will send specimens of anthracite coal equal to any in Pennsylvania, 

 and the same county has for exhibition some very fine specimens of marble. 

 Wyoming will do her "level best" with a copper display. 



Exhibits too are promised from all the mineral producing Eastern States, 

 Indeed, so wide is the interest excited in the scheme, that thirty states and terri- 

 tories, and it may be even more, will be represented either by their ores, their 

 agriculture, or their manufactures. 



In Power hall there will be three lines of shaftings, one for light machinery 

 2j2g- inches in diameter, with 150 revolutions per minute; the others i\^ inches 

 in diameter, with 200 revolutions. For the machinery exhibited will be in active 

 operation, so that a person may learn here in three days more of the practical 

 workings of a mine, reduction of ore, etc., than he would gain perhaps in going 

 about among them for a month. 



Quartz mills, air compressors, drills, retorts, reverberatory roasting furnaces, 

 reverberatory smelting furnaces, pans and settlers for amalgamating, concentrators, 

 etc., all in active operation, will be in the hall; in fact everything necessary to 

 convert the ore into bullion, whether it be of the free or refractory character. 



Choice specimens, in cases, of a geological, metallurgical or other scientific 

 nature are promised, and many at the time of writing have already arrived frorn 

 some of the most eminent scientists in the country, and will form one of the 

 valuable features of the display. 



The agricultural exhibit will consist principally of contributions from the 

 western states and territories, and will no doubt be worthy of the rest of the 

 exposition. 



The Fine Art gallery is one-third of a mile in extent. It is under the charge 

 of the president of the Denver Art School, himself an artist, an excellent critic 

 and one of the best engravers in the country, J. Harrison Mills. Applications 

 for space here have been made from the leading artists of the United States, while 

 a number of pictures will come from abroad. Keramics will be liberally consid- 

 ered in this department, the Cincinnati and other schools furnishing fine contri- 

 butions. Miss Louise McLaughUn and other eminent designs also to be represent- 

 ed. So that this department is not to be lightly considered, but promises to be 

 one of interest and beauty, much beyond all that it had been imagined possible 

 to gather together so far west. 



The industrial exhibit will have the character of all such exhibitions, with 

 perhaps a leaning to machinery and implements used in mining. Space has 



