1 N J ) E X , 
97 
Page. 
Monroe, Ga. , corundum near — 81 
Montana, corundum in 66 67, 82 
sapphire deposits in. map showing lo- 
cation of ... - -- 
sapphiresin '• :,: » 
M < intvale, N . C. , corundum near 
Morozewicz, cited — --- '•'■'- 
Nannies Mountain, S. ( ..'.. corundum at... 06 
Nevada, corundum in 82 
New Jersey, corundum in 
New York, corundum in 
emery in .-- 70-71 
Newfound Gap, N. C, corundum at > v "> 
Newlin,Pa., corundum at... 
Newton, N. J., corundum at 
Nona. N. < !., corundum at 
Norite, corundum in 
North Carolina, corundum in 55-63 
emery in •'-' 
peridotite rocks and corundum locali- 
ties, map showing -. 54 
sapphires in - 
Norwich, Conn., corundum near 80 
Oconee County, S. C, corundum in v ^ 
( ild mine. Mass., cross section of 69 
Oriental ruby , distribution and char 
39 16 
Oriental sapphires, occurrence of 46 
Owens ( 'reek. N. ('..corundum at 
Patterson, < '.('..reference to 86 
Peekskill. N . V. . corundum '. . 
emery near . ~> u 71 
Pelham, Mass., corundum at .. 19,82 
saxonite at 19 
Pennsylvania, corundum in. ; •■ 
Peridotite at Corundum Hill, N. C, map 
of. 56 
contact between gneiss and. plato 
showing 64 
corundum in 11 19 
cross section of, after intrusion in 
gneiss 16 
outcrop of, plate showing 10 
transition from corundum to, cross 
section showing 17 
vein between gneiss and, plato show- 
ing 56 
vein, contact from gneiss to, cross sei 
t ion of 12-14 
Peridotite formation at Corundum Hill, 
N.C., plate showing 56 
Peridotite rocks in Georgia and North 
Carolina, map showing location < if 5 I 
Pine Mountain, Ga.. corundum at 81 
Pirsson.L. V.,aid by 30 
cited 29,92 
quoted 28 29,32 33 
Plumas County, Cal., corundum in 79-80 
Porter Springs, Ga. , corundum at 81 
Powder Springs. Ga., corundum at. 81 
Presley mine, N. C. , corundum at 85 
Pr it chard , J. C. . reference to 85 
Quinn.H.M., reference to 71 
Rabun Gap, Ga., corundum at 81 
Reed mine, N.C., corundum at 85 
Bull. 180—01 7 
I'age. 
Retgers.J. W., cited 93 
Retreat. N. C, corundum at 85 
Rock Creek, Mont., sapphires on.. 5 
Ruby, oriental, distribution and charac- 
ter of , 39-46 
Ruby Bar. Mont., sapphires at... 47,82 
corundum in andesite at - 29 
Ruby-bearing gravel at Caler Fork. N. ( '.. 
plate showing 40 
Ruby crystals, plate showing 42 
Ruby mine at Cowee Valley. N. ('.. plate 
showing -- 40 
Sackett mine, Mnss., emery at 68 69 
Salomon. W.. cited 92 
Sapphire. N. ('.. corundum near 61 63,86 
peridotite area.- in vicinity of, mapof. 62 
sapphires at 17 
Sapphire crystals, figures showing 50 
plate showing 52 
Sapphire deposits in Montana, map show- 
ing location of . . , 46 
Sapphire 5, distribute in of 1 
varietiesof 9 10,39 
Sapphires, oriental, occurrence of 16 
irundum in contact with 1!) 
Scaly Mountain. N. ( '..corundum at 60, B6 
Serpentine, corundum in 20 
Sheffield mine. X. ( '..corundum at I 6,58,86 
Shimerville, Pa., corundum at 86 
Shoups Ford, N. C, corundum at 86 
Silver Peak, Ne v., corundum a 
skeener Oap. N. I !., emery at 
Smith, J. L., cited 17,91 
Snowmine, Mass., emery at . 69 70 
Socrates mine. N. < '.. corundum at 62,86 
South Carolina, corundum in... ... 66, -7 
Sphalerite, hardness of 38 
Spokane Bar, Mont., sapphire a1 18 19,82 
Spratt. A.N. .reference to 49 
Spratt,F., reference to 49 
Statesville, N. C, corundum inamphibo- 
liteat. 22 23 
Stone mine. Ga.. corundum at 81 
Stuart. Va.. corundum near 35,87 
Swannanoa Gap, N.C., corundum at 86 
Syenite, corundum in ">u :>1 
Teltonviile, Ga., corundum near 81 
Thomaston, (4a. . corundum near 81 
Thumping Cre< k, N. * !., corundum at. 33 34,86 
Towns County, Ga..amphibolite and co- 
rundum in 21-22 
Track Rock n inc. Ga., corundum at 65,81 
Traphagen, P. W., aid by 31 
Turkey, corundum in - 91 
Turkey Knob, N. C, corundum at 86 
Unionville, Pa., corundum at 66,86 
Uses of corundum 75-79 
Utah, corundum in.. 66,87 
Vernon, N. J., corundum at 36,82 
Villagegreen, Pa , corundum at 87 
Virginia, corundum in 87 
Vitrified wheel, method of manufacture. 77 
Vogt, J. H. L., cited 27 
"Waldroop, J. A., reference to 72 
Waldroop mine, N. C, corundum at 72,86 
