Dr. Hare's Deflagralor and Calonmotor. 339 



iraotor was interposed between the two halves of the Defla- 

 grator, the proper poles of the latter instrument were con- 

 nected with the two divisions of the troughs ; first, zinc, with 

 copper, and copper with zinc, and then the reverse, and the 

 power was received at the proper poles of the troughs, char- 

 eoal points being used as before. 



When the metals both of the Deflagrator and Calorimotor 

 were in the air, a spark passed, such as corresponded with 

 the power of the troughs only; when the Calorimotor was 

 immersed, this power was neither increased nor diminished ; 

 but when the Deflagrator was immersed, its power flowed 

 freely through the batteries, and was received apparently 

 undiminished at the charcoal points, but did not appear to de- 

 rive any increase from the troughs. This was the fact, 

 whether the Calorimotor was, at the moment immersed, or 

 not, but the lifting of the coils of the Deflagrator out of the 

 fluid, immediately reduced the spark, to that which the 

 troughs alone would afford. 



The several instruments being now disjoined, each acted 

 by itself, in its own appropriate character. 



4. The original experiment of connecting the troughs 

 with the Deflagrator only, was now again repeated, and 

 with the same result as before ; the power of both instru- 

 ments wasso destroyed, that only a very minute spark could be 

 seen, and that with difficulty. 



From these experiments, and those formerly related, the 

 following conclusions may be drawn : — 



1. The galvanic troughs and the Deflagrator paralyse 

 each other, and cannot be made by any means hitherto tried, 

 to act in concert. 



2. The Calorimotor does not impede the action of the 

 troughs; it allows their energy to pass through itself, but 

 contributes nothing to aid their power and cannot be made 

 to project its own power through the troughs. 



3. The same fact is true of the Calorimotor in relation to 

 the Deflagrator; the powers of these instruments cannot be 

 made to unite, only the Calorimotor allows a transit to the 

 power of the Deflagrator ; but the Deflagrator does not in 

 its turn, transmit the power of the Calorimotor. 



4. The Calorimotor, however, when connected, at once 

 with the troughs and with the Deflagrator enables them, so 

 far to unite, that the deflagrator acts through the troughs. 



