vaporizes more kerosene and thus the burning continues.

[Illustration: Courtesy of _Detroit Vapor Stove Co_ FIGURE 15.--
CROSS-SECTION OF WICKLESS KEROSENE STOVE.]

In one type of wickless stove it is necessary to heat the burner so that
the kerosene will vaporize when it comes in contact with it (see Figure
15). Such a burner may be heated by pouring a small quantity of gasoline
into it. A lighter is then applied to the burner. When the latter is
sufficiently heated, the kerosene is turned on. The kerosene then
vaporizes as it flows into the hot burner and burns.

In other types of so-called wickless stoves, the burners are equipped with
asbestos or other incombustible material. This material becomes saturated
with kerosene and carries the fuel to the tip of the burner somewhat as
does a cloth wick.

It is especially necessary to keep kerosene burners clean. Bits of carbon
collect in them and prevent perfect combustion. This results in "smoke" or
soot issuing from the burner. It is well to keep the burners and wicks
free from charred material, and to renew the latter when they become
short.

Most kerosene stoves are equipped with removable containers for the fuel.
These should be kept filled with sufficient kerosene for burning. A wick
burner should never be allowed to burn after all the kerosene in the
container is exhausted.

GASOLINE STOVES [Footnote 10: See note to the teacher, Footnote 9.]--
Since gasoline is a much more readily inflammable fuel than kerosene, it