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In the first the gas issues through two holes which come together at the top, so that the two jets of gas impinge and form a flat flame; in the batwing the gas issues in a thin sheet through a slit in a hollow knob; while in the argand the gas enters a short cylinder or broad ring, escaping thence through numerous holes at the upper edge.
The consumer's immediate remedy in any case is to use a smaller tip with the fishtail and batwing burners, and a taller chimney with the argand; which devices will give a quicker movement to the gas in one case and to the air in the other. The smoking, however, may be caused by carbonic acid, which checks combustion.
"The usual forms of the burner," replied the chemist " or, more properly, the forms of the tip are the fishtail, the batwing and the argand.
Inside there he had introduced the Raglan shirt, the Duke of Westminster four-in-hand, and the Churchill batwing collar. He longed to enter and plead for reinstatement, but his new-found pride refused to budge his legs door-ward. Thirty shillings, twelve for his "third floor back," and the rest for clothes and books and simple amusements. What a whirl he had been in, this past fortnight!
Ten years ago this burner, with a regulator at the meter, was generally thought to be the most economical contrivance possible. It is now little used. Yet either the batwing or the fishtail tip can be used in any common burner except the argand. The old brass and iron tips are mostly superseded by those of "lava," being liable to an early change of the orifice from incrustation and rust.
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