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map showing..

See also localities named.

26
25, 26

100
96, 101
101

31
24

29

46

29

73,74
114
132

Paris Hill, Me., feldspar deposit at..
feldspar from, tests of..
Parsons, C. L., work of..
Pegmatite, composition of..

116
116
95

25-28, 96, 97, 160
See also Feldspar; Granite, graphic.
Pegmatite dike, weathered, view of...
10
Penland, N. C., microcline from, view of.... 24
Pennsylvania, feldspars in..
16-18, 145-158
17

classes of...

composition of...... 17, 145, 146, 150-152, 157
minerals associated with..
feldspar district of.

18, 19
16
146

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[blocks in formation]

о

Thermoelectric pyrometers. See Pyrometers.
Ticonderoga, N. Y., feldspar deposits near. 133-135
feldspar from, composition of.......
tests of..
view of..
Ticonderoga district, N. Y., feldspar in.
mining of...

96, 134
134
24
13, 14
14
107-109
107, 108
graphic granite from, composition of.. 54,55,59
view of..
10
Toughkenamon, Pa., feldspar deposits near, 153, 154
feldspar from, tests of..
Tourmaline, composition of...
in pegmatites......

Topsham, Me., feldspar deposits near,..
feldspar from, tests of.....

153, 154
27
10,27
79

86

Tramways, aerial, systems of..
Tube mill, construction of..
figure showing..
operation of..

86

86

[blocks in formation]

Page.

54

156-158
96, 157

157

24

of....

W.

Water in quarries, removal of....

Watts, A. S., on kaolization of feldspar..
samples collected by.......
Westchester County district, N. Y., feldspar

in...
analyses of...

Wilson, Hewitt, on effect of kaolin on feld-
spar.
Woodstock, Md., feldspar deposits near..
feldspar from, tests of...
pegmatite from, composition of..

333

53

20, 21
20, 21, 165–171
21, 165

69

69

Y.

graphic granites in, composition

54

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46-51
163
163, 164
97, 163

59

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