98 
INDEX. 
Page. 
Walker, T. L. , reference to 90 
Watauga mine, N. C, corundum at 85 
"Webster, N. C, chlorite schist near 21 
peridotite at, relation of gneiss to 12 
Weed, W. H., cited 52 
Wells, G. A., reference to 55 
West Chester, Pa., corundum at.-.. 87 
West Mills, N. C, corundum at 86 
West Point, Ga., corundum near 81 
Wheel, cement, method of manufacture. 78 
Wheel, chemical, method of manufacture 77 
Wheel, vitrified, method of manufacture 77 
Page. 
Whitehall, Md., corundum in 81 
Whitewater mine, N. C, corundum at. .. 63,£6 
Williams, G. H., cited _. 26,27 
Winston Salem, N. C. , corundum at 86 
Wright mine, Mass. , emery at 67-68 
Yellow Mountain, N. C, corundum at .. . 60,86 
Yogo Gulch, Mont,, corundum in basic 
minette at 28 
sapphire crystals from, plate showing 52 
sapphires on 52-55,82 
Zeb Jones mine, N. C, corundum at 57 
Zirkel, F., cited 92 

