double salt that forms from water between ---1i0 and 80'. S o anhydrous salt has been described, though hleyerhoffer' mentions briefly that he obtained one. In our work mixtures of the single salts were treated with alcohol just as in the previous case. Glass rods were used in the bottles to assist in reaching equilibrium. I n analyzing solutions, only copper was determined (by titration with thiosulfate a5 before) as the amount of ammonium chloride dissolved was very small, and the solubility

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... elations are suffciently clear from the data found for cupric chloride alone. The residues were very fine and always included a small amount of alcohol. In the table, the composition ol the dry residue is given except in the last t.cvo results, where the alcohol formed a compound. The following results were obtained : T.\HLI: III.--SOLUBILITY O F .brnroNIunr-Cr-rRIc CHLORIDES I N ;\woi,i AT 250. Per cent. Per cent. Per cent. Per cetit.