Page:The Journal of geology (IA journalofgeology11893univers).pdf/42
The Idaho exhibit is fairly good, but not thoroughly characteristic of the state. The most prominent features are the silver-lead ores from the northern part of the state, green copper carbonates, and a mineral water known as "Idanha" from Soda Springs. A number of photographs of different mining districts are of interest.
Washington makes a fairly good, but poorly arranged, exhibit of gold ores, silver ores and silver-lead ores, and a few other products. The coal resources of the state are entirely neglected, though they are well represented in the Washington state building. This separation of the mining products of a region, and their distribution partly in one building party in another, is a great mistake, as it gives a person who sees only one of the exhibits an incomplete and therefore an erroneous idea of the resources of the state. The exhibit should be all in one or the other building.
Oregon makes a large exhibit of auriferous quartz and shows a very good working model of hydraulic mining. Some building stones are also represented. The exhibit is very good so far as it goes, but it does not do justice to the state, as many of its developed and undeveloped resources such as iron, coal, etc., are not represented.
California makes a good exhibit, and one characteristic of the resources of the state. It is very appropriately composed largely of gold ores and a display of the methods of gold mining. The auriferous quartz of the celebrated Grass Valley and other localities is well represented. An interesting feature is a wooden model by A. C. Hamilton showing a system of mine timbering. Stibnite from San Benito county and the metallic antimony derived from it are also represented. Among the other prominent features of the exhibit are iron ores, asphalt, oils, slate and a beautiful display of ornamental and building stones. The so-called "onyx" from San Luis Obispo county, and the colored marbles from Inyo County are exceedingly beautiful. The exhibit is entered through arches built of the various ornamental stones of the state, while blocks of rock containing the beauti-