Oxymuriatic Gas and Oxygen, &c. 413 
‘deduced from the data which have teen stated in the pre- 
ceding pages. Five proportions of potash, equal to 240 
grains, must be decomposed to form with an equal number 
of proportions of oxymuriatic gas equal to 164°5 grains, 
five proportions of muriate of potash equal to 367 grains 5 
and five of oxygen equal to 37°5 grains, combined with one 
of potash, equal to 48, must unite in triple union with one of 
oxymuriatic gas equal to 32°9, to form one proportion, equal 
to 118*4 grains of hyperoxymuriate of potash, 
3. On the Combinations of the Metals of’ the Earths with 
. , Oxygen and Oxymuriatic Gas. 
The muriates of baryta, lime, and strontia, after being a 
lon& time in a white heat, are not decomposable by any 
simple attractions: thus, they are not altered by dry boracic 
acid, though, when’ water is added to them, they readily 
afford muriatic acid’and their peculiar earths. © 
From this ‘circumstance, [’ was induced’ to 'belicve that 
these three cdinpounds consist’ merely OF thé peculiar me- 
tallic bases, which T have named’ barium, ‘strontium, and 
calcium and oxyiitindtic ga; “and such'expetiments as E 
have been able to make, ‘corfirhi the conclusion. 
When baryta, strontia, or lime, is h€ated it oxymuriatic 
gas to redhess, a body precisely the’ Sante as a dry muriate 
is formed, and oxygen is expelled’ from the earth. 1 have 
never been able to effect so complete a decomposition of 
these earths by oxyshatiatic gas, as to ascertain the quantity 
of oxygen produced from a given qnantity of ‘eartii. But 
in three experiments made with great card Pfound that one 
of oxygen ‘was evolved for’ evety 'Wo'Gd voluthé ‘of oxymu- 
Tete eas AD CORK EO eee ee ee Te 
“| have not yet tried the experimichit Of 'aetine tpon oxy- 
miuriatic G8 bY the bases’ OF the alkiitine darth$} ‘but I have 
not thé feast “doubt ‘thar’ these ‘bédies Would Lombine di- 
rectly with that substance, ‘and form dry miuriates. 
_In'the last experiments’ that IT mad? ‘on the thetallization 
of the earths by atnaloamaticn, 1 paid partienlar attention 
to the state of the products formed, “by éxposing the resi- 
doum of amalgams to'the ait. 1 found that Burvia formed in 
this way Was hot fusible at an intense White heat, and thet 
strontia and lime so formed wave Offind Water when ignited. 
Baryta thade’ frit drystals’ of the ‘cathy “as M. Berthollet 
has shown, i¥ & fusible ly drat “and Mesa that this earth 
gave moisture when decomposed by oxymuriatic gas; ane 
the lime, in hydiat of lime, was mach nioré rapidly de- 
composed 
Pe Ee eT Pe ee et my 
