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This small lamp, which is of a sufficiently elegant form 
and very simple construction, unites many advantages 
which the class may appreciate. It is, in the first place, 
easily put in order, and diffuses a very pure and mild light, 
without producing the least smoke or any smell. It is con¬ 
structed in so perfect a manner, that it is impossible to spill 
a single drop of oil, in carrying it about, and its flame con¬ 
fined in its small tube (cheminee) of glass, burns tranquilly, 
without being affected either by the motion of walking, or 
by the wind. It possesses another property which is pecu¬ 
liar, and which must doubtless be thought valuable, that of 
giving the precise quantity of light which may be required) 
from that of the small watch light of the bed-chamber, to 
the greatest degree that it can furnish and all this without 
any more odour when reduced to a very small flame, than 
when it burns with the greatest brilliancy. 
It will be seen by the detailed description of this lamp, 
what were the means used to furnish it with the various im¬ 
portant properties which it possesses. 
The lamp is on a supporter seven or eight inches high, 
which is placed on a circular base and at its superior ex¬ 
tremity is a reservoir of oil, in the shape of a mushroom, 
from which there passes out horizontally a handle by means 
of which the lamp may be carried. The wick pipe, which 
is a simple tube of tin, from four to five lines in diameter, 
is placed on the axis of the supporter and the wick is raised 
or lowered by means of a racket which is completely con¬ 
cealed within it. A lamp glass, placed in the aperture of 
the supporter above, serves to direct the air in such a man¬ 
ner as to nourish and whiten the flame and to defend it from 
the wind. This is a general description of the lamp ; it re¬ 
mains to give a clear and precise account of its various 
parts. 
The sufifiorter , which is sixteen lines in diameter, is 
composed of two pieces of tin, in the form of tubes ; these 
are inserted tightly into one another, and are united togeth- 
