Description of two new Voltaic Batteries. 271 
I am inclined to believe that the seed is taken internally 
by the worm, and causes its death; and that in the following 
spring it vegetates, finding a suitable bed or soil in the de- 
cayed worm, 
JACOB CIST. 
MECHANICS, PHYSICS, CHEMISTRY, AND THE 
ARTS. 
oo @QOQ a. 
Arr. XV. —Description of two new Voltare Batteries ; by 
Evisaa De Burts, M. D. Professor of Chemistry an 
the University of Maryland. 
[In a Letter to the Editor. ] 
Dear Sir, 
Pernars no branch of science is more important at 
_ this moment than electricity. 
~The power possessed by certain galvanic arrangements 
to elevate temperature to extraordinary degrees, when as- 
sociated with our present views of chemical theory, renders 
thenr justly objects of great interest. But when we reflect 
upon the phenomena which heave resulted from a power 
which they also possess to affect the magnetic condition of 
bodies, we cannot be surprised that so much of the atten- 
tion of the scientific world is devoted to this department of 
study. A consideration of the facts developed by the ex- 
periments of Oersted, Ampere, Arago, &c. made me desi- 
rous to repeat them and to pursue the subject, and as the 
most remarkable magnetic effects appeared to have been 
produced by large plates, 1 endeavoured to construct an 
apparatus, upon a plan which should not only have that 
advantage, but also those by which it might be adapted to 
operations connected with chemical researches, and in re- 
lation to both to possess if possible, in a greater degree 
than any of our galvanic instruments, all those circumstan- 
ces of mechanical facility that have been found useful in 
