INDEX. 



253 



IGNITER, ELECTRIC 



Heat of, 70 



Ignition point of gases (table), 207 

 Incandescence not flame, 168 

 Indiana natural gas analyses, 105 

 Installation of apparatus, 13 



JACOBUS'S FORMULA, 143 

 Johnson's coal tests, 75 

 Junker's calorimeter, 40 



KENT ON WASTE GASES, 141 

 Kent's ratio of hydrogen and carbon 



in coal, 78 



revision of Johnson's tests, 75 

 Kilo-calorie, 3 

 Kroeker calorimeter and correction 



for water, 73 



LEAD OR LITHARGE TEST, 10 

 is unreliable, II 



Lignite, 78 



, Heat of combustion (table), 231 



Lord and Haas on Ohio and Penn- 

 sylvania coal, 9 



Luminosity, 168 



depends on pressure, 169 

 not due to solid particles, 168 



MAHLER'S CALORIMETER, 57 

 determinations of gas, 101 

 experiments on coal gas, 96 

 formula, 9 



Manchester gas, Analysis of, 93 



Mixed gas, 101 



, Calories of (table), 245 



Moisture in coal, 112, 114 



Moisture in steam, 119, 187 



Molecular calorie, 2 



Morin and Tresca on coal, 75 



Morin and Tresca's wood tests, 86 



NAPHTHALIN, CALORIES OF, 46 

 Natural gas and analysis of, 105 

 Calories of, 106; (table), 241 

 Value of, 106 

 Variation in, 105 

 Nitrogen, ratio of, to oxygen 



(table), 207 



Nixon's coal ; calories of, deter- 

 mined, 66 



OHIO NATURAL GAS, 105 

 Oil aspirator or gas-holder, 132 

 Oils, Heat of combustion (table), 238 

 Orsat-Muencke'apparatus, 134 



Oven cokes, Heat of combustion 



(table), 234 

 Oxygen, Compressed, is dry, 52 

 in cylinders, 59 

 necessary for combustion, 125 



(table), 



201, 202 



, Ratio of, to nitrogen in air 



(table), 207 

 required to form water with coal, 



140 ; (table), 206 

 To prepare, 24 



PASTILLES, HOW MADE, 51 

 Peat, 80 



; Calories of (table), 232 

 Petroleum, 88 



at Chicago, Canada, Moscow, 89 



, Calorific power of, 90 



heating tests, 90 



, Calories of (tables), 238 



, Steam used in atomizing, 91 

 Pittsburg natural gas, 105 

 Pneumatic pyrometer, 152 

 Pound-calorie, 2 



Producer gas, 98. See Gas, Producer 

 Products of combustion of 



Alexejew's calorimeter, 28 



charcoal, 84 



Favre and Silbermann's calorim- 

 eter, 26 



oil, 91 



Schwackhofer's calorimeter, 37. 



See Waste Gases. 

 Pyrometer, Pneumatic, 152 



REGNAULT'S FORMULA, 4 

 Regnault and Pfaundler's law, 18 

 Ringelmann's smoke scale, 158 

 Ronchamp coal, Smoke of, 156 



" Waste gases of, 134 

 Rothkohle, 83 

 Rumford's calorimeter, 20 



SAMPLER, GAS, 128, 131 

 Sampling, Coal, 112 

 Sauvage's exp'ments on charcoal, 83 

 Scheurer-Kestner's experiments on 

 charcoal, 84 



gas sampler, 128 



smoke analysis, 155 



and Meunier-Dollfus on coal, 75 

 Schist, Bituminous, 79 

 Schwackhofer's calorimeter, 35 

 Segur's differential gauge, 145 

 Sensitiveness of thermometers, 6 

 Shale oil, 88 



