ON THE MODE OF ACTION OF. THE GALVANIC PILE. (/Q 



A person in the neighbourhood of Maidstone, who manu- The toad capa- 



factu res brown paper, informed me. last summer, while 1 . co sustain " 

 1 . r ing very g'cat 



was observing his people at work, that he had frequently pressure. 



placed a toad in the midst of the pile of sheets to be pressed, 



and always found it alive and well on takiogitout, although ^» >iT f ^ 



it must liave sustained, with the paper, a pressure equiva- .ma.iti»m 



lent to several tons ; but a frog could never survive tlie same 



degree of pressure. I searched a long time for a toad, to 



see the experiment myself ; but it was a very warm day, 



and I was unable to lind one, till after -the men had left 



work. 



I am, Sir, : ^_ 



Y^our obliged, 

 March 25th, 1810. A. M. 



.MOO 



XIV. <vxq 



Communications on the Mode of Action of the Galvanic Pile 

 announced. By J. A. De Luc, Esq. F. R. S. fyc. 



To Mr. NICHOLSON. 



Silt, 



jL OUR kindness in admitting into your celebrated Jour- Discoveries 



nal some former papers of mine induces me to offer vou concerning the 



. , J action of the 



some others ; tts my Aiew to bring to the knowledge of natu- galvanic pile 



ral philosophers my discoveries concerning the Mode of Ac- announced. 



tion of the Galvanic Fife will be as effectually accomplished 



by that channel, as through the Phil. Trans, of the Royal 



Society, into which (I know not why) they have net been 



admitted. The following is a short account of what has 



passed on this occasion. 



In January 180G, I had the honour of presenting to the Two works on 



Royal Society two works, connected with each other, under 1! ^turai philo- 



the titles of, Introduction a la P/tys. terrcstre par les Fluides ed ioUTr^-- 



expansibles, and TraiU elementaire sur h Fluide electro-«cl- al Society, 



vanique, which works I wrote at Berlin during my stay in 



that place, and which were printed at Paris; the latter of 



them contains a Process of Analysis of the Galvanic Pile, 



which 



