168 
ON THE COMBUSTION OF GAS FOR ECONOMIC PURPOSES. 
Relative Illuminating Power of Cannel Gas, when burnt from different Burners and in 
different (Quantities from the same Burner. 
Power in sperm candles (120) per foot of gas. 
Kind of Burner. 
Single jet 
1 Foot 
2 Feet 
3 Feet 4 Feet 
5 Feet 
per Hour. 
per Hour. 
per Hour, per Hour, per Hour. 
2-64 . 
— 
” • • 
— 
3*23 . 
3*59 . 
3-66 . — . 
— 
3*59 . 
3*95 
4*11 . 4*0 . 
— 
3*49 . 
3*61 . 
3-89 . 3-85 . 
— 
3*09 . 
3-76 . 
4-05 . 4*11 . 
4*16 
0-26 . 
1*74 . 
2*43 . 3*53 . 
3-68 
0-28 . 
2-04 . 
3*09 . 3*57 
3-77 
Lancashire fishtail (No. 2) 
do. do. (No. 4) 
London do. (No. 2) 
Bat’s-wing. 
Sixteen-hole Argand . . 
Winfield 28-hole Argand 
What, then, is to be done in the apparent confusion of all these facts, and can any 
useful generalization be made of them? 
In the first place, we perceive that, of all kinds of burners, the single jet is the least 
effective. 
Secondly, we notice that, although the bat’s-wing and fishtail burners are not subject 
to so great variations in power as others, and are therefore best suited for common use, 
yet they require certain precautions to be fully effective. The best burners are those 
which consume from 3 to 5 cubic feet of gas per hour, and the slits and holes should be 
so graduated that the gas issues at the pressure of from 0‘08 to 0T2 of an inch for very 
poor gas (12-candle), and from 0*20 to 0‘40 for 14-candle gas, and from 0'4 to 0'6 inch 
for cannel gas. 
Thirdly, we find that Argand burners are only fit for gas of less than 18 or 19 candle 
power. For very poor gas (up to 13-candle), the best form of Argand burner is the 
porcelain Argand of France (the Bengel), which has the following measurements — 
Bengel Burner (Argand) of 30 holes. 
3T50 inches. 
1*220 
0-886 
0-354 
0*650 
0*024 
7-87 
2-00 
55 
Total height of burner . 
From gallery rest to top . 
External diameter. , . 
Internal do. . . . 
Diameter of circle of holes 
do. of holes . . . 
Height of glass .... 
External diameter of do. 
The flame is protected from currents of air by; _ 
is pierced with 109 holes of the 0*118 of an inch in* diameter. This burner requires a 
pressure of from 0*15 to 0*25 for the proper consumption of the gas, and the rate at 
which it burns never exceeds ■3*5* cuhic-feet per hour. * This is the standard burner for 
France, and, compared with the best English burners, the value of the light for 5 cubic 
feet of 13-candle gas is as 113 is to 100. 
In this country the best form of Argand burner is the 15-hole steatite burner of Mr. 
Sugg, The measurements of it are as follows *.— 
Sugg's Steatite (Argand) of 15 holes. 
a cage or basket of porcelain below, which 
Total height of burner . 
From gallery rest to top . 
External diameter . . 
5J 
Internal 
Diameter of circle of holes 
Diameter of holes . . . 
Height of glass 
External diameter ditto 
3*00 inches. 
1*10 „ 
1*10 „ 
f variable, according to 
^ quality of gas, 
0-80 „ 
0*06 
7*00 
2*00 
» 
)5 
The flame is protected by a perforated metal disk placed under the gallery, the perfora¬ 
tions being 0*08 inch in diameter, and 8 in the inch linear. 
The diameter of the inner hole or air-channel should vary according to the po-wer of 
the gas, thus:— 
