42 Air. KIR wan's Experiments and Obfervations oft 
the divellent 238. Further, if a folution of nitre be mixed 
with a folution of marine felenite, an invhible double decom- 
position will enfue, Mem. Par. 1778, p. 341. ; the fum of the 
quiefcent powers being 304, and of the divellent 313. 
. a io hation of nitrous Epfom be mixed with that of ma- 
rine ielemte, a double decompofition will be the confequence, 
’7 K0Z - 393 • : the fum of the quiefcent affinities being 164’ 
and that of the divellent 167. 
From all which I colled', fird, that the quantity of each 
affinity, as here determined, perfedly coinciding with all the 
fads hitherto known, which are pretty numerous, may be 
looked upon as exad or nearly fo. 2 dly, That thefe decompo- 
sitions aie peifedly confident with the luperior affinity which 
hitherto has been generally afcribed to the vitriolic and nitrous 
acids with fixed alkalies over that which thefe acids bear to 
earths, and do not m the lead infringe the received laws of 
affinities, as MefiT. marher, monnet, and lately Mr. cor- 
NETTE, ill the Memoirs of Paris for 1778, p. 339. do infinuate. 
There is a fad, however, in that valuable repofitory of 
chymical knowledge, Mr. creli/s Chymical Journal *, which 
at fiid fight feems contrary to one of the above determinations ; 
it is there laid, that if dilutions of one part allum and two 
paits common fait be mixed together, evaporated to a certain 
degree, and fet to crydallize, a Glauber’s fait will be found 
} et in this cafe the fum of the quiefcent affinities is 233, and 
that of the divellent but 223. I repeated this experiment 
without fuccefs, and indeed the author owns it never fucceeds 
but during the mod intenfe cold. 
If it does fucceed at all, the decompofition mud arife from a 
laige excefs of acid in the allum, which aded upon and de- 
* 6 THEIL, p. 78. 
compofed 
