INDEX. 
165 
Page 
Quarts-diorite, Cecil county. Md., percent- 
age of silica and vanadium in 
Quart z-mica-diorite, Tuolumne County, 
Cal.. percentage oi" silica, vana- 
dium, and molybdenum in 
Quartz-monzonite, Calaveras County, Cal., 
percentage of silica, vanadium, and 
molybdenum in 
Quartz-porphyry, Tintic district, Utah, per- 
centage of silica and vanadium in.. 
Quartz-schist, Madera County, Cal., per- 
centage of silica and vanadium in. 
Ransome, F. L., aid by 
minerals collected by 
notes on character of Stanislaus mine, 
Cal., by 
Rhyolite, Crater Lake, Oreg., percentage 
of silica, vanadium, and molyb- 
denum in 
San Miguel County, Colo., percentage 
of silica, vanadium, and molyb- 
denum in 
Tintic district, Utah, percentage of 
silica and vanadium in 
Richards — , cited on determination of sulphu- 
ric acid 
Riggs, R. B., analyses by 28, 29, 30 
formula; computed from data of 26 
Roscoe, H. E., analysis by 72 
reference to 70, 73 
Xoseoelite from California, chemical con- 
stitution of 73-74 
mineralogical notes on 70-74 
Rosenheim, A., cited on solubility of ferric 
trimetaphosphimates 108 
Sandstone, percentage of silica and vana- 
dium in 51 
liaponification of phosphonitrilic chlo- 
rides 141-142 
■axonite, Douglas County, Oreg., percent- 
age of silica and vanadium in 50 
capolite, St. Lawrence County, N. Y., 
alkaline reaction of 157 
50 
50 
Mi 
50 
51 
60 
CO 
59 
50 
50 
102 
90 
51 
13,15 
51 
13,14 
chitf, H., cited on phosphaminsamre 
chist, epidotic, Mitchell County, 1ST. C, per- 
centage of silica and vanadium in.. 
chneider, E. A., mentioned 
erpentine, Connecticut Valley, Mass., 
percentage of silica and vanadium 
in 
ilicates, effect of ammonium chloride on., 
paper on alkaline reaction of some natu- 
ral 156-158 
paper on the solubility in water of cer- 
tain natural 159-160 
lver hexarnetaphosphimate, constitution 
and properties of 150 
lver pyrosphosphate, analyses of 1 1 G 
lver salt of aruidoheximidoheptaphos- 
phoric acid, analyses of 1 52 
observations on 151-152 
> lver salts of pentametaphosphimic acid, 
analyses of 145, 146 
observations on 144-140 
Page 
Silver, salts of trimetaphosphimic acid with 
6 atoms of, analyses of 106 
observations on 105-107 
Silver, salt of trimetaphosphimic acid with 
4 atoms of, analysis of 104 
observations on 104-105 
Silver triimidotetraphosphate, constitution 
and properties of 148 
Slate, red, Washington County, N". V., per- 
centage of silica and vanadium in. 51 
Slate, sea-green roofing, West Pawlet, Vt.. 
percentage of silica and vanadium in 51 
Sodalite, symbols for 24 
alkaline reaction of 157 
Sodium amido-diimidotriphosphate, anal- 
yses of and observations on 99 
Sodium hexametaphosphimate, constitution 
and properties of 149 
Sodium salt of amidoheximidoheptaphos- 
phoric acid, constitution and prop- 
erties of 151 
Sodium salts of pentametaphosphimic acid, 
analyses of 143 
observations on 142,143 
Sodium tetrametaphosphimate, analysis of. 147 
observations on 147-148 
Sodium trimetaphosphimate, decomposition 
of, by acetic acid 116 
analyses of 97, 98 
character of 98 
figures showing crystals of 97 
Spisolite, Michigamme iron district, Mich., 
percentage of silica and vanadium in 50 
Stalactite, Butte, Mont., analysis of 76 
Steiger, G-., aid by 70 
analysis by 154 
paper on the solubility in water of cer- 
tain natural silicates by 159-160 
Steiger, G., and Clarke, F. TV., report on ex- 
periments relative to the constitu- 
tion of pectolite, pyrophyllite, cala- 
mine, and analcite by 13-25 
Stilbite, alkaline reaction of 157 
solubility of and percentage of alka- 
lies in 160 
Stokes, H. N., analyses by 49 
paper on the chloronitrides of phos- 
phorus and metaphosphimic acids 
by 77-153 
Sulphates, Montana, mineralogical notes 
on 75-76 
Syenite, Mount Ascutney, Tt., percentage 
of silica and vanadium in 50 
Syenite-lamprophyre, Prowers County, 
Colo., percentage of silica and va- 
nadium in 50 
Syenite-porphyry, Mount Ascutney, N't.. 
percentage of silica in 50 
Talc, reaction caused by ignition 13 
Tassin, "W., cited on crystallization of hexa- 
phosphonitrilic chloride i:;2-133 
Tellurides from California, mineralogical 
notes on 60-63 
Tetra-ammonium tetrametaphosphimate, 
observations on and analyses of ... 121 
