\ 
Dr. Hare’s Deflagrator and Calorimotor. 337 
sensible heat. During the operation, there appeared a band 
of intense fire around the buzz, continually emitting spark 
with great violence. He afterwards marked the saw, fo 
the teeth, and in a short time cut them out, by the same 
means. It seemed evident, that the buzz, in effecting the 
division, never came in actual contact with the plate. Was 
this fire the electric fluid? If so, might it not be obtained, 
in greater quantity, and be made more effective for chem- 
ical parposes, by some such machine, than in any other 
way! 
s 
ig 
Art. XIX.—On the relations, existing between the Defla- 
grator and Calorimotor, and between those instruments and 
the common Galvanic or Voltaic Batteries, in a letier to 
Professor Robert Hare, M. D. from the Editor. 
Yale-College, April 4, 1823. 
Dear Sir, 
Through the medium of this Journal, (Vol. 4. pa. 201, 
and Vol. 5, pa. 102,) I have already communicated to you 
and to the public, the singular fact, that your Deflagrator 
will not act with the common Galvanic Batteries, in whatev- 
er mode they may be connected, and that, although belong- 
ing to the same class of instruments and evolving the same 
imponderable agents, there still exists between them a total 
incompatibility. This incompatibility, it will be remember- 
ed, does not begin to be overcome, until the pairs of galvan- 
ic plates are reduced to twenty, in number, when thé pow- 
er of the Deflagrator begins to pass, and increases until one 
pair only is interposed, when it passes apparently without 
diminution. 
I am induced again to call your attention to this fact, for 
the sake of connecting it, with some observations which I 
have recently made, upon the relations between the Calori- 
motor and Deflagrator, and between these instruments, and 
the common Galvanic Batteries, for it is‘only by varying 
our observations and experiments, that we can hope to ar- 
rive at a just explanation, of the singular phenomena exhib- 
ited by these instruments. 
Vol. VI.—No. 2. 43 
