Miscellaneous Notices on Galvanic Results. 29 
“A voltaic battery has been got up (at the expense of two of 
our leading men, whose names I am not at liberty to mention,) 
for the sole purpose of investigation. The battery consists of 
one hundred and sixty porcelain pint jars, each containing a cop- 
per and zinc cylinder ; the latter being covered with stout brown 
paper, is introduced to the interior of the copper. The exciting 
fluids are solutions of sulphate of copper and muriate of soda; 
the former applied to the copper cylinders, and the latter to the 
zinc ones. When the jars were in series the flame was upwards 
of an inch long, from a charcoal point, rotated on the poles of a 
magnet, according to the principles of electro-magnetism. Davy 
deflected the electrical flame by magnetic influence, but Iam not 
aware that he rotated it.” 
“ Sulphuret of lead (galena,) was decomposed, and metallic leak 
obtained. Sulphuret of antimony was decomposed, and the li- 
berated metal kept in fusion for several minutes. The boiling 
antimony was three inches long and half an inch wide between 
the polar wires, and exhibited a beautiful spectacle, in a channel 
of those dimensions which the action had formed in the native sul- 
phuret. When the electric flame was directed through the air be- 
tween stout copper polar wires, the positive wire became red hot, 
but the negative wire could not be made red. The wires were 
_ made to change poles, still the same thing occurred: nay, even 
two inches of the positive wire, which was completely out of 
the circuit, was rendered hot, but no redness appeared on the 
negative wire. How at fe curious and interesting is this 
last result ! 
“When the whole battery was formed into eight groups of 
twenty jars each, and properly connected with an electro 
eter, the sited pases were liberated from water at the rate of one 
cubic inch per seven seconds: and this for many successive min- 
utes, although the battery had been in action for seven previous 
hours without interruption.” 
In his letter of August 6, 1839, Mr. Sturgeon prpoceds to.ob- 
serve, that a good description of the apparatus and experiments 
will be found in the memoir above named, and of which he 
kindly transmitted a-copy. But he remarks: “there are some 
particulars connected with the discovery of the difference of tem- 
perature, produced in the positive and negative wires, which 
want a clearer description than any given by Mr. Walker, or, 
