ON THE COMBUSTION OF GAS FOR ECONOMIC PURPOSES. 167 
0-008 . 
Bat’s-wings. 
. . . 1-19 . . . 
. 100 
0-012 . 
0-49 . . . 
. 184 
0-016 . 
• • « 
0-24 . . . 
. 232 
0-020 . 
» • • 
0-16 . . . 
. 293 
0-024 . 
* • • 
0-11 . . . 
. 313 
0-028 . 
« • • 
0-09 . . . 
. 322 
0-032 . 
• • • 
0-07 . . . 
. 316 
0-036 . 
• • • 
0-04 . . . 
. 310 
0-040 . 
• • • 
0*03 . . . 
. 307 
Argands 0 /15 Holes and 1-inch Chimney, consuming 5 Cubic Feet of Gas per Hour. 
Size of Inner Hole. Pressure, Inch. Relative Value per Foot Gas. 
0-70 .... 0-66 .... 100 
0-57 
0-48 
0-44 
0-43 
0-42 
0-46 
0-17 
0-17 
0-17 
0*17 
108 
117 
120 
115 
110 
And, again, the same burner with different pressures, and therefore different rates of 
consumption, will give different values, when calculated for the same quantity of gas. 
Relative Luminosity of the same, Jet (0*04 in) at different Pressures, calcidated for equali 
Consumptions. 
Consumption per Pressure, 
Relative Value 
Hour, Cub. Ft. Inch. 
per Foot Gas. 
0-88 
. . . . 0-28 . 
• • • 
100 
1-31 
.... O -43 . 
156 
1-80 
.... 0-87 . 
• • • 
195 
2-33 
.... 1-38 . 
• • • 
240 
2-83 
.... 1-97 . 
• • • 
264 
3-53 
.... 2-68 . 
• • • 
270 
Fishtails (0*03 in. 
holes). 
2-00 
.... 0-17 . 
• • • 
100 
3-00 
.... 0-34 . 
• • • 
109 
4-00 
. • . . 0-50 , 
• • • 
111 
5-00 
• • • • 0‘74 • 
• • • 
110 
6-00 
• • • • 1*00 • 
• t • 
95 
Bat’s-wings (0*015 in. slit). 
2-00 
.... 0-13 . 
• • • 
100 
3-00 
.... 0-21 . 
• • • 
109 
4-00 
.... 0-29 . 
• • • 
135 
5-00 
. . . . 0*45 . 
'• -J* • 
128 
6-00 
.... 0*53 . 
122 
7-00 
. . . . 0*68 . 
121 
Sugg’s Argand 15 Holes (0’45 Internal Diameter ; Hole 0*05 in,). 
2-0 . . . 
. . 0*04 . . 
. . 100 
3-0 . . . 
. . 0-08 . . 
. . 143 
4-0 . . . 
. . 0*12 . . 
. . 183 
5-0 . . . 
. . 0*17 . . 
. . 202 
5*5 . . . 
. . 0*18 . . 
. . 201 
6-0 . . . 
. . 0-19 . . 
. . 196 
And so, also, with cannel gas, although in many cases the variations are not so great as 
with common gas, yet they are sufficiently considerable to be serious. This is seen by 
the following table, which I have drawn up from the experiments of Mr. King, of 
Liverpool:— 
