Hare's New Galvanic Apparatus; Theory; §e. 115 
there not twice the intensity ? But the one acts Sole i 
may be said; the other slowly. But whence this di 
They may both have exactly the same surface to uae in. . 
The same zinc and copper plates may be used for coatings 
first, and a galvanic pair afterwards. Let it be said, as it 
may in truth, that the charge is, in the one case attachéd to 
the glass superficies):i in the other exists in the pores of the 
metal. But why does it avoid these pores in 
and reside in them in the other? What else resides in the 
pores of the metal which may be forced out by percussion ? 
Is it not caloric ? _ Possibly, unless under constraint, or cir- 
_ cumstances favorable to a union between thie principle and 
riemniaes the latter ec: cannot enter enter the metallic pores, a 
a certain degree of saturation ees wae _electrica 
ead fa Leyden 
pliel though it fuses the wire which forms a circ ft fon 
them ‘ - = 
It is admitted that the action of the mich fluid, is upon 
or between atoms ; while mechanical electricity when unco- 
“erced, acts only upon masses. ‘This difference has not been 
: explained unless by my hypothesis, in which caloric,, of 
which the influence is only exerted between atoms, is sup- 
posed to be a’ principal Sports in galvanism. . Nor has any 
other reason been given that water, which dissipates pure 
electricity, should-cause the_ galvanic fluid to accumulate. 
_ From the prodigious effect which moist air, or a moist sur- 
face, has in paralyzing the most efficient machines, I am led 
to suppose, that the conducting power of moisture so situa- 
ted, is greater than that of water under its surface. The 
power of this fluid to conduct mechanical i beara is un- 
fairly contrasted with that of a metal, when the cnet is 
enclosed in a glass tube, the latter bare.’ 
According. to Singer, the electrical RA is as 
great when water is used, as when more | menstrua 
are employed ; but the power of ignition 3 is wanting, until 
these are resorted to.. De Luce showed, —— 
dissections of the pile, that electricity might be 
without, or with chemical power. The rationale of these 
<diiletonets never ~ been given, Cin tbe oe ae 
Tone’ $ sagacious eniuitlogs and. stitial a Ebenifal fal and i in- 
