. 
‘giving way to the Sa aelay power. 
without any regar 
-‘GALVANISMe 
the acid j in the pofitive. In a firhilar manner velfels of fluat 
of lime afforded lime-and fluoric a 
cid. 
the fame experiment with fulphat of Laat lee 
he found that the acid and bafe were a a obftin 
By u eee er 
power, however, in four days he Precis portions of 
the earth and acid. 
then made a number of experiments with ia 
mineral fubftances, "alich by een afforded alka 
acid. His firft experiment was u e fine grained le 
ne el ee ene by analy ‘lord d foda, muriatic 
cid, an cu xpofed as in the laft 
pa aie, i ten ious oxy-murlatic was found in the 
pofitive cup, and foda and lime in i other. The mineral 
called lapidolite gave potafh in way; anda piece of 
SS ie from Etna gave lime ere ath, and foda. 
the refults peared upon infoluble bodies, it was 
e& that fimilar decompofitions and eae 
ry 
T 
d water, 
experiments, and the 
by moiftened amianthus. The bafe of the f 
ferred to the negative cup, and the acid to the pofitiv 
‘The falts which Mr. Davy employed, and which undone it 
amm 
nitrats of pota 
einat, eae, and te of ammonia, and a folution of 
him 
The muriats, st saa anes to this pied afford oxy- 
muriatic acid. was occafioned by xygen of the 
water, which was acon ofed at the fame ti ime 
When a folution of a a of compatible. falts was 
expofed in the agate cups, all their bafes were transferre 
together to one are hee the acids colle&ively to the other, 
their order of affinity. 
The pees Saas appears to have been more compleat in 
the metallic falts, fince the oxyd of the metal is alfo decom- 
poled; the oxygen d the acid arrangin ree inacie 
around. the pofitive wire, and ed metal in cry rng 
Senay that i in a 
in er one. 
e Mr. Davy alludes to an experiment made 20 - 
Gantherot, ule de Chimie, vol. xxxix. page 
which he obferved that the oxyd of zinc was Bo ie to 
the negative wire. Another fa& is alfo a by 
inger an and Berzelius, in the fame, a 
171. hey had in one leg of a fyphon a folution ne es of 
zinc, and in the other diftilled water, the former leg being 
eonnected with the pofitive fide of the battery, and the latter 
with the negative. ‘The vaiaeal water, after a certain time, 
they = to contain lim 
Bye ace 
isje} 
o 
gate and another of fulphat of 
ara 
lime, | ee heh he introduced diftilled water, and conne ected 
made negative. 
ate cup contained lime, and the other an an excefs of 
ip erfed, when it was 
pies ical € i ahfo lute cént: fat a 
from the ith t ane 
Aine foluticn, he filled two glafs tubes. with diftilled water, 
piac 
ced between a third yeflel, containing a folution of 
muriat of foda, the oobi a eel fluid — lower 
than thofe of the w in h g were 
brought into the rhe: patients pure ie. and i in“ oieies n 
hours: the ene tube became ese acid, and the other 
~~ alkaline, with muriatic acid an 
diet the acid and alkali to a really tranfinitted fronr 
the middle veffel, through the pieces of amianthus, to 
he wires in the tubes, he filled one or the tubes with a fo. 
lution of fulphat of potath, and the other with dittilled water: 
the io e Ha contained diftilled water tinged with litmus. 
itr 
i on tae fide of the arrangement, and are 
il itfelf” e the a of the intermediate veffel; but 
o change took place on the negative fide 
had been all the ae pe Pon the negative to 
tive fide. order was now reverfed, makin 
ean . poate ie pofitive fide ; but inftead of litm 
n the intermediate veffel. The 2 
exhibit ted ie fame ‘myfteviow us appeariwice in - an from 
the pofitive to the negative fide. ric becam 
krown on the negative fide only, while the one fide of 
the intermediate veffel underwent no change. 
n another inal ore two glafs tubes were filled with a 
fotution on muriat of foda, and the a piece with 
fulphat of filver. ‘Turmeric paper was place tied pofi- 
tive fide, and that of litmus on the negative : as ions acom- 
oe was formed, begar toappear inthe ane ae 
oxymuriatic aci eae pofitive tube. In the in- 
ieee velle 1 the muri ea marked its effects on fie 
pofitive fide by a denfe acne and the foda was 
guifhed on the other fide by producing a. lighter- ce 
In the firft of the two laft experiments, it appears that 
the ci a paffed through the ae nd the alkali oe 
the eric, without produc any vifible effet upon 
dea ane in the fecond the muriatic acid had paffed wie 
oO 
a 
= 
ao o 
‘K 
83 
° 
2 
oO 
re) 
eeds the che aa affinity 0 age which 
fhould on this occafion have beer exerted. "Se veral ftriking 
experiments were made to nee up thefe apparent anomalies. 
Into one of the ge ufed in the lait experiment was put 2 
ee fulphat of pot-ath, into the ot 
an te cee te veffela w 
a fe alphuri ric 
rong and even faturated fo. 
fh and lime an fimilar refults.. In othe 
ths were tranfmitted: Gieaeh 
Serres in all inftan und that barytes 
did not pafs through fence ic acid aie producing fome 
fulphat of barytes, and the fame took place when the acid 
was attempted to be paffed through a folution of barytes s. 
a effects took place with ftrontian and fu Iphurie 
was obferved that the metallic oxyds were transferred 
with more difficulty than the alkalies.and eart 
In an experiment in which the green falphat of iron was 
placed im the pofitive tube, pure water in the ne 
tio 
green oxyd of iron began to appear 
