902, Dr, Hare’s Galvanic Deflagrator. 
fore effected by the same surface of metal, arranged in the 
same number of combinations. This will appear “the more 
you insulate your coils, ave not yet been able to use 
without them. 
With your eighty coils of fourteen inches by six, for 
the copper, and of nine by six for the zinc, I obtained ef- 
fects which, as to every thing that related to intense heat 
and light, and brilliant combustion, far surpassed the powers 
of a battery of the common form of six hundred and twenty 
pairs of plates—one hundred and fifty pairs of which, of six 
inches square, are insulated by glass partitions—one hun- 
dred pairs of the same size, and three hundred of four inches 
square, are bee ey oa by resin, and the rest, either by Wedg- 
wood’s or by resin, making in the whole a battery 
with a verte of eH eon eight hundred and 
eighty square im inches. Your’s _a surface’ of only 
twenty-two wo thousand: and eighty square inches, bt even with- 
with that advantage. This is the most t singular circumstance 
connected with your new apparatus, and which goes far to 
stake our previous theoretical opinions, if not to gs 
I repeated every important experiment stated in your 
Seal and with results so similar, that it is scarcely neces- 
sary to relate them. ‘The combustion of the metals was 
brilliant beyond every thing which I had witnessed before, 
and the ignition of the charcoal points was so intense, as 
to equal the brilliancy of the sun; the light was waaaedie 
intolerable to eyes of only common stren 
name any metallic substance which burned with more than 
common energy, it would be a common brass pin, which, 
when held in the forceps of one pole, and touched ‘to the 
charcoal point on the other, was consumed with such ener- 
sy; that it might be said literally to vanish in flame. 
~The light produced between the charcoal points when im- 
mersed beneath acids, oils, alcohol, ether, water, &c. was 
very intense, and platina melted in air as readily as wax in 
the blaze of a candle. It is a very great adyentens of your 
eae hnceenen eter ncn t of r8trr rh ino 
