EXHIBITS IN MINES AND MINING BUILDING. 46 1 



find which is representative of great economic importance. It 

 displays its clays, sands, iron ores, building stones, petroleum, 

 salt, etc., in a thoroughly systematic and creditable manner, and 

 gives a very good idea of the relative importance of the differ- 

 ent products. 



The Pennsylvania exhibit is somewhat more elaborate than 

 that of New York, as it should be, on account of the greater 

 value of its products. Its immense coal and oil resources, 

 together with its iron, clays, glass-making materials, slates, build- 

 ing stones, etc., are very well displayed. A model showing the 

 method of coal mining and relief maps of the anthracite basins 

 and of the whole state add to the attractions of the exhibit. A 

 large series of samples of crude and refined petroleum are an 

 appropriate and interesting feature of the exhibit. A large col- 

 umn of anthracite in a conspicuous position in the centre of the 

 building, and apart from the rest of the Pennsylvania exhibit, 

 represents a vertical section of the "mammoth seam" on the 

 property of the Lehigh Valley Coal Company. A second column, 

 near the main Pennsylvania exhibit, is composed of blocks of the 

 different products of that state, varying in size according to 

 their importance, the smaller blocks being "placed successively 

 higher in the column. 



New Jersey makes a much less elaborate exhibit than either 

 New York or Pennsylvania, though it is neatly arranged and in 

 some respects it is good. The magnetic iron ores of the north- 

 ern part of the state, and the clays, marls, and other products 

 are well exhibited. The zinc deposits of Sussex county, how- 

 ever, are only poorly represented, and in this respect the exhibit 

 might have been improved. A glass-plate model of the zinc 

 mines at Mine Hill, Franklin Furnace, Sussex county, is an 

 attractive feature. 



Virginia makes a very characteristic and well arranged 

 exhibit, though the fact that the materials exhibited are not in 

 cases detracts from their neatness. A large display of coal and 

 coke, so rapidly becoming the most important products of the 

 state, is made ; while the characteristic brown hematite (limon- 



