PRELIMINARY HANDBOOK OF THE DEPARTMENT OF GEOLOGY. 37 



(10) Delaware is at present wholly unrepresented. 



(11) Maryland by 81 specimens, comprising 09 iron ores, associates 

 and products of which 47 form a very complete illustration of the Muir- 

 kirk furnace, 2 copper, 2 gold, 1 manganese, and 1 chrome-iron ore, 2 

 siliceous sand used in mortars, and 1 each of steatite, mica, limestone, 

 and shell marl. 



(12) Virginia by 100 specimens, comprising 30 iron ores, associates 

 and products, 24 ores of gold, 11 of gold and silver, 9 of zinc, 5 of lead, 

 3 of manganese, of tin, 2 of copper, 2 specimens pyrite, used for mak- 

 ing sulphuric acid, 2 of rock salt, 1 each of gypsum, soapstone, kaolin, 

 infusorial earth, asbestos, and allanite. 



(13) West Virginia by 28 specimens, comprising 1G iron ores, asso- 

 ciates and products, 10 of coal and 2 of petroleum. 



(14) North Carolina by 97 specimens, comprising 40 ores of gold, 3 

 of gold, silver, and lead, 1 of lead, 4 of copper, 3 of gold and copper, 

 2 of gold and silver, 1 of gold and iron, 7 of iron, 2 of chrome iron, 7 

 of nickel, 1 of manganese, 4 samples corundum, 3 of muscovite, 3 of 

 garnet rock, 3 of phosphate rock, 1 asbestus, 5 refractory materials, 4 

 of steatite, and 1 each of graphite, barite, and pyrophyllite. 



(15) South Carolina by 18 specimens, of which are ores of gold, G 

 of iron, 1 of manganese, 5 are phosphates, and 1 asbestus. 



(10) Georgia by 50 specimens, of which 27 are ores of gold, 1 of 

 gold, silver, and lead, 2 of gold and copper, 1 of gold and zinc, 4 of 

 silver and lead, 2 of lead, 2 of copper, 1 1 of silver, 3 of iron, 3 of man- 

 ganese, and 1 each of asbestus, corundum, and clay. 



(17) Alabama by 42, of which 4 are iron ores, associates and prod- 

 ucts, and 1 coal. 



(18) Florida by 18 specimens, all phosphates. 



II. — MISSISSIPPI VALLEY REGION. 



(19) Michigan is represented by 110 specimens, of which 50 are ores 

 of iron, 54 of copper, 2 copper-silver, 2 silver, and 1 each of glass sand, 

 and gypsum. 



(20) Wisconsin by 11 specimens, comprising 7 iron ores, 2 lead, and 

 1 each of gold and manganese. 



(21) Minnesota by 10 specimens, all ores of iron. 



(22) Ohio by 20 specimens, comprising 10 ores of iron, 3 coals, 2 sam- 

 ples fire clays, 2 of sandstones for grindstones, 1 of gypsum for making 

 land plaster, and 2 of petroleum. 



(23) The Dakotas by 22 specimens, of which 3 are gold ores, 4 silver- 

 lead, and 12 tin ores, 2 are coals, and 1 a quartzite used for street pave- 

 ments and general building. 



(24) Illinois by 15 specimens, comprising 12 samples coals and 3 of 

 petroleum. 



(25) Indiana by 14 specimens, of which 3 are coals, 3 abrasive ma- 

 terials, 3 iron ores, 3 clays, and 2 petroleum. 



