378 HH. Wurty Contributions to Analytical Chemistry. 
porous earthenware and then on the sand-bath, but a faint trace 
of chlorine. The liquid poured off contained but little strontia, 
giving a precipitate with sulphuric acid only after standing for 
some time.* 
8. Aluminium.—Pure chlorid of aluminium left, after one 
evaporation with acid of 1:29 sp. gr., a nitrate beautifully erys- 
tallized in thin plates, which contained no chlorine and deli- 
quesced only in very damp air. These crystals were not further 
examined. 
same. Any experiment with the protochlorid is obviously use- 
filter clear. After filtration it had a brownish red or exactly 
presence of 
e tained un- 
doubtedly one of Ordway’s polybasic sesquinitrates of jron.t 
again, 
of sesquichlorid of iron. The portion of the residue 1 
in water having been washed, (in which operation 1 a 
ran through the filter,) until the washings no longer gave 4 © wes 
rine reaction, was examined and found to contain both chlort 
and nitric acid. 
* The action of nitric acid in the cold upon the chlorids will be examined, and 
results presented in a subsequent part of this memoir. It opens @ new soceseenit 
ably more or Jess fertile in practical applications, which was entirely unfo 
commencement of this investigation, ork 
+ Made from pure carbonate obtained from Mr. James R. Brant of New 
P iam Jour. Science, [2], ix, 32; Liebig and Kopp's Jabresbericht for 1350, 
