88 Notes on Chemistry, &c. 
3. Curious effects of a current of air on the flame of lamps, &c.— 
The singular change of direction produced by introducing into the 
axis of an Argand burner a jet from which a current of air is forced, 
of which an account is given in the Lond. and Edin. Phil. Mag. for 
November, 1835, led me to notice some effects of currents of air on 
the flame of acommon lamp. If a small tube, of the size of the 
barrel of a quill, be blown through strongly with the mouth, while 
in the positions shown in the figures below, the flame of the lamp 
will be drawn from its course towards the orifice of the tube ina 
very singular manner. The figures show some of the results. 
SL 
\ \ 
HH: \ 
i at) 
K' : pte 
‘ ” 
y 
tf 
= — —S 
SS—=—. : EBA 
SS SS 
SSS: SA 2B 
= === 
: 
— = 
—— z 
, 
e] 
<< 
=| 
ee 
A, the flame before affected by a current. 
B, C, D, position of the flame under the influence of the currents. 
These effects evidently depend for an explanation upon the same 
principles as the well known experiment with a tube and disk. 
West Point, Nov. 26, 1836. 
