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Page
Acetylene, density of..
heat of combustion of...

95
Air, density of...
Air'displacement, sampling by...
Alkaline pyrogallate, for determining oxy

use of...
Allen, I. C., work cited..
Allison, V. C., work cited..--------
Ammonia, density of ----
Argon, density of..-------
Baumė, A., work of....
Benzol, heat of combustion of.
Börnstein, R., work cited.---

103
Bureau of Mines, investigations of..---.
Bureau of Mines Orsat apparatus..

44-48
blower for combustion pipette, figure showing 50
combustion pipette for, figure showing-
copper oxide tube for, figure showing --
electric heater for, figure showing
figure showing----

40
manifold for, figure showing ---
operation of..---

48-52
typical analysis by.----

52
wooden support for, figure showing--
Burrell, G. A., work cited.---

** 31, 36, 44, 69, 81, 85, 98,
Busch, Max, work cited
Butane, density of..----
heat of combustion of.

95
Butylene, density of..

102
heat of combustion of...

95
Canaries, for detecting carbon monoxide, use
Carbon, hea tof combustion of.-----
Carbon dioxide, density of..

- 102
determination of, by Bureau of Mines Orsat

apparatus.----
by Orsat apparatus..

--- 37
molecular volume of, at various partial pres-

sures..---
test for, in Haldane apparatus...
Carbon dioxide and air, lowering oxygen con-

tent of, effect of.---
Carbon dioxide and methane, portable appa-

ratus for determination of..---------- 35-36
figure showing-----
Carbon monoxide, den
determination of....

50, 63-69
heat of combustion of..--

-- 95
in mines, detection of..--
Carbon to CO, heat of combustion of.
Caustic potash solution, preparation of.
Caustic soda solution, preparation of...
Chlorine, density of...
Claroline oil, as solvent, characteristics of..

- 100
Combustibles, determination of, calculations
Copper oxide apparatus, for complete analysis
of mine air.

41-54
figures showing--- - 40, 45, 46, 47, 50, 53

view of.--------
Damiens, A., work cited...
Davis, J. D., acknowledgme
Ethane, analyses of..-.-.

density of
determination of, by Bureau of Mines Orsat

apparatus....
heat of combustion of..
reactions with oxygen, equations for..

solubility in absorbents.
Ethyl alcohol, heat of combustion of...
Ethylene, density of..---

heat of combustion of....
Fieldner, A. C., acknowledgment to...--
Flame safety, lamp, for detecting methane,
checking reading of...

--- 7,31-32
use of..

30

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Fluorine, density of..
Foster, C. Le N., work cited...
Frankland, P., work cited.----

-- 103
Gas, combustible, determination of, in Hal-

dane apparatus..
solubility of, in absorbents.--------- -- 16, 54-57

in liquids---
volume of, changes in, formula for
Gas interferometer, calibration of..

conclusions regarding------------
diagram of.-------

75
laboratory type

7576
results from use of.

76-77
use of...

74-80
Gauger, A. W., work cited.
Gladstone, T. H., work cited.
Gleim, E. J., work cited ---
Gutbier, A., work cited.----
Haber, F., work cited..
Haldane, J. S., work cited..
Haldane apparatus, for analyzing mine air..

advantages of..---.
burette of, graduation of...
care of..-
precautions in use of..--

28-30
preparation for use. ----

19-21
solutions used in, preparation of...
for determination of methane ---- -- 32-33
Hall, Clarence, work cited.
Harpster, W.., acknowledgment to....
work cited.

79
Helium, density of..-.

--- 102
Hempel, Walther, work cited.

------ 10, 61
Heptane, heat of combustion of
Hesse apparatus, for determining carbon di-

oxide.----------------
Hexane, heat of combustion of..
Hoileman, A. F., work cited.
Hood, O.P., work cited..
Howell, S. P., work cited.----
Hulett, G.A., work of..--

work cited...
Hydrobromic acid, density of ...
Hydrocarbons, unsaturated, determination of,

by Bureau of Mines Orsat apparatus.
Hydrochloric acid, density of..---
Hydrogen, density of..--
determination of, by Bureau of Mines Orsat

apparatus...
heat of combustion of...
Hydrogen sulphide, density

heat of combustion of..

in natural gas, determination of..------
Tisley. L. C., work cited
Interferometer, laboratory type, view of.

See also Gas interferometer.
Iodine pentoxide method, for determination of

carbon monoxide, apparatus for ----- 63-64
figure showing..-

--- 62
with liquid air, for determination of carbon
monoxide, apparatus for..

--65-66
figure showing--
Isobutylene, heat of combustion of..------- 95
Jacobs, W. A., work cited....
Jones, G. W., work cited.------- 22, 44, 58, 66, 72, 98
Katz, S. H., acknowledgment to...
Krypton, density of.....
Kudlich, R. H., work cited....
Küppers, E., work cited..

----- 74,80
Laboratory container, for holding gases over
mercury, description of...

61-63
figure showing..-..

61
Landolt, H., work cited..

85, 86, 87, 103
Lebenu, P., work cited..

-------
Leduc, -, work of...--

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Page

Pag
Le Rossignol, R., work cited.----
- 79 Oxygen, density of, table showing..--------

10
Löwe, F., work cited.-----

determination of, by Bureau of Mines Orsat
Manganous hydroxide method, for determining

apparatus...
oxygen in natural gas, use of..----- 93-94 by Orsat apparatus..

31
Marvin, C. F., work cited.....

in natural gas, determination of. ..
Meighan, M. H., work cited...

importance of...------

92-93
Mercury, distillation of...

Paraffins, fractionation of....

- 96
Mercury still, with electric heater

properties of..-------
figure showing---

Parker, W.L., acknowledgment to...
with gas heater....

work cited....

58, 72
figure showing...
-- 59 Paul, J. W., work cited.

30, 32
Methane, analysis of..
-- 89 Pentane, density of...

-- 102
apparatus for determination

heat of combustion of..

95
figures showing.--
, 34, 35 Pentylene, density of..

- 102
density of..

102 heat of combustion of
determination of, by Bureau of Mines Orsat Perrot, -, work of..----
apparatus.. ---------------------

51 Phenol-disulphonic acid method, for deter-
heat of combustion of..

mining oxides of nitrogen.

72-74
portable apparatus for determination of.... 33-35

standards for...
figure showing---------

Phillips, F. C., work cited..
reactions with oxygen, equations for....

Phosphorus, for determining oxygen in natural
solubility in absorbents...--

gas, use of....
Methane and air, lowering oxygen content of, Pittsburgh natural gas, constituents of..---- 97–98
effect of.

experiments with...

96-98
Methyl alcohol, heat of combustion of...

Porter, Frank, work cited...
Methyl chloride, density of

Potassium pyrogallate solution, preparation of.
Methyl ether, density of...

Propane, density of......

102
Mice, for detecting carbon monoxide, use of

heat of combustion of...

95
Milligan, L. H., work cited...

Propylene, density of.
Mine atmospheres, analysis of, methods for.. 12

normal, heat of combustion of...
laboratory apparatus for exact analysis of, Pyrotannic acid method, determination of car-
diagram of...-

18

bon monoxide by, apparatus for..--- 66-68
view of...

view 01.--------------------------------- *
sampling of, methods of.

2-7

curves for..-
Mohr, 0., work cited.

74, 79 procedure for...
Moisture, determination of, laboratory appa-

Rayleigh, -, work of...
ratus for ---

10-11

Rayleigh interferometer. See Gas interfero-
figure showing.---

- 11

meter.
table showing-------

- 11 Return air, from coal mine, analyses of...------ 25
Natural gas, analysis of, apparatus for ..... 80–104

Rice, G. S., work cited.-----
figure showing----

Robertson,'I. W., acknowledgment to..
procedure for.

work cited...

1, 2, 81
carbon monoxide in, qualitative tests for -- 84-90 Rogers, G. S., work cited
constituents of...--

81-82 Sayers, R. R., acknowledgment to.------- 1
containing high percentage of carbon mon-

work cited.----------------

----- 12, 66
oxide, analysis of...

88 Seibert, F. M., work cited.----
density of, determination of

100-103

Shepherd, Martin, work cited.
fractionation of..

95-98 Silicon tetrafluoride, density of
apparatus for, view of..

Sling psychrometer, view of..---
gasoline content of, tests for -----

98-100 Snelling, W.O., work cited.....
heating value of...-

Sodium pyrogallate solution, preparation o
calculation of....

Sulphur, heat of combustion of...
hydrogen sulphide in, determination of..

Sulphur dioxide, density of..-------
liquefaction of.

95-98 Teague, M. C., acknowledgment to..
olefin hydrocarbons in, qualitative tests for. 84-90 work cited.--------
oxygen in, determination of...

91-94 Thermometers, wet and dry bu
Pittsburgh, action of cuprous chloride on.-.- 56

curves of readings from..
action of sulphuric acid on....

view of...
sampling of, methods of..-

Toluol, heat of combustion of
solubility in oils, apparatus for determining,

Travers, M. W., work cited.------
diagram of..

Tribe, Alfred, work cited...
tests of....

rimethylené propylene, heat of combustion of 95
Neon, density of..
Neumeister, F. N., acknowledgment to..

Vacuum bulbs, arrangement for shipment,

figure showing ----
work cited..

44
Nitric oxide, density of..

102

Vacuum method, for sampling mine gases..... 2
Nitrogen, density of...

apparatus for.-----

102
oxides of, formation of..

Water vapor, density of.....
in mine air, determination of..

70-74

Water displacement, sampling by...
Nitron method, for determining oxides of

apparatus for, figure showing ---
nitrogen..

71-72 Weight method, for determining density of nat-
results of gas analysis with...

ural gas.---------

100-101
Nitrous oxide, density of...--

White, A. G., work cited....
Oberfell, G. G., acknowledgment to...--

Winkler, Clemens, work cited...
work cited...

Winkler' titration method for determining

--------- 1, 2, 44, 81
Orndorf, W. R., work cited.....

methane.-----

Worstall, R. A., work cited...
Orsat apparatus, for analysis of gases not con-
taining ethane...

Wright, L. T., work cited.
figure showing------

Xenon, density of..--------
modified, description

36-41 Yant, W. P., acknowledgment to.---------
figure showing....

work cited.
precautions with.--.

9 | Young, S. W., work cited...

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