ON A CONDENSATION PKODUCT OF ACETONE & ALDEHYDAMMONIA. -35 



;i Few minutes, and upon recrystallization from absolution in hot water. 

 the pure double salt, for so it was judged to 1)'.' from its appearance, 

 was obtained in large brilliant scaly plates. The sail melts at 148°- 

 149°. Ir partially volatilizes at above 1(10°. It seems to contain one 

 molecule of the water of crystallization, but on account of its volatility 

 its amount cannot be accurately determined by the usual method-. 

 The crystals of the double salt, after being dried over calcium 

 chloride, were analysed : 



(I.) 0.3957 -ram the double sail gave 0.3941 -ram AgCl. 



(II.) 0.3645 .. „ „ „ „ 0.2353 .. U.S. 



1 ' iutl - ,.i i . i 



, _ < alculated as 



I II. C 8 Hi 3 N.HC].2HgCl 2 + H a 0. 



Chlorine 24.64 24.66 



Mercury 55.63 5 r>. ô i) 



Water — 2.50 



The crystals of the double salt, finely pulverized, were heated 

 over an air bath al 130° for some time, by which the powder became 

 compact, having apparently lost its water of crystallization through 

 partial volatilization. Thesalt was then analysed. 



0.3887 gram the anhydrous sail gave 0.2593 -ram HgS. 



Found. Calculated as C„H l3 N.H« 1 2B~gCl 2 . 



Mercury 57.83 "»7.2 



On comparing this analytical result with that given in the 

 preceding analysis, we may infer that the salt contained one molecule 

 of water. 



The Gold Djuble Salt, G a E 13 N. HCl. AuCl 3 .— This was prepare«! 

 by adding an alcoholic solution of gold chloride to an aqueous solution 

 of the hydrochloride of the base. On driving off the alcohol from 

 the solution, the double chloride separated out as a crystalline 

 precipitate, which consisted of microscopic yellow needles. It was 



