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on......

Page.
Tetrachlorhydrine, triphosphonitrilic, anal.

ysis of and observations on........ 84
preparation of .......

84
Tetrametaphosphimates, observations on. 120-124
Tetrametaphosphimic acid, analysis of.. 119-147
character of.

88-89
decomposition by water, ammomnia, and
ammonium acetate.

118
observations on.......

..... 116-124
observations on chlorhydrines of..... 118-119
preparation of........

118
Tetraphosphonitrilic chloride. See Chloride

tri- and tetraphosphonitrilio.
Tetra-silver imidodiphosphate, analyses of. 114
observations on.......

.. 114-155
Tetra-silver tetrametaphosphimate, obser-
rations on and analyses of.

123
Tetra-sodium salt. See Sodium amido-di.

imidotriphosphate.
Tetra-sodium tetrametaphosphimate, analy.
ses of......

121
observations on...

120, 121
Thomsonite, alkaline reaction of...

157
Titanium, warning against use of Huorif-

erous hydrogen peroxide in estimat.
ing.......

56
Tourmaline, analyses of ....... 28, 29, 30, 31, 32, 33
formula for

26, 27
paper on the constitution of

26-36
Towers, G. W., specimens collected by.
Trachyte, Highland County, Va., percent.

age of silica and ranadium in ...... 50
Trachyte-andesite tutt, Tuolumne County,

Cal., percentage of silica and va-
nadium in .....

50
Triimidotetraphosphoric acid, properties of 148
Trimetaphosphimic acid, constitution of... 91-93

decomposition products of 93-96, 108-116
method of analysis of salts of

96
method of preparing decomposition
products of.

108-110
preparation of..

96-97

Page.
Trimetaphosphimic acid, paper on ........ 89.-116
Trimetaphosphimic acid, free, observations
on.....

108
Triphosphonitriclio chloride. See Chloride,

tri. and tetraphosphonitrilic.
Tri-silver diimidotriphosphate, analysis of. 112
observations on......

111-112
figures showing crystals of ......

111
Tri-silver imidodiphosphate, analyses of.. 114
observations on .....

113
Tri-silver trimetaphosphimate, analyses of. 103
figures showing crystals of.

103
method of preparing

102
observations on

103-104
Tri-sodium diioidotriphosphate, analysis of
and observations on..

110-111
Tri-sodium imidodiphosphate, observations

113
Turner, H. W., acknowledgments to....... 70
reference to...

74
work of... ....

64
Tysonite, Cheyenne Mountain, Colo., anal.

ysis of
mineralogical notes on bastnäsite aud.. 64-66
Vanadium, distribution and quantitative

occurrence of molybdenum and, in

rocks of the United States......... 49-55
volumetric estimation of, in presence of

small amounts of chromium........ 4478
Volumetric estimation of vanadium in

presence of small amounts of chro-
mium...

44-48
Weed. W. H., reference to.....

75
Wernerite, St. Lawrence County, N. Y.,

solubility of and percentage of alka-
lies in

160
Wichelhaus, H., reference to..

78
Wislicenus, J., cited on metaphosphimie
acid....

1.36
referenco to...

137
White, J., work of..

78
Zinc ethyl, etleet of lcat on..

83

63, 64

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