180 Proceedings of the Boyal Society 
the neck of the flask and a glass rod which was held over the 
mouth of it were covered with white feathery crystals. The fluid 
was filtered, and, after drying the brown residue, it was put into a 
beaker covered with filter-paper, and left over a water-bath, when 
it nearly all sublimed in crystals corresponding to those obtained 
when attempting to dissolve it. A few of these crystals were dis- 
solved in alcohol and bichloride of platinum added, but no preci- 
pitate was formed, and on evaporation the original substance 
crystallized out. These circumstances indicated the body to be 
Tribromaniline. The filtrate from the brown substance obtained 
originally was treated with bichloride of platinum also, but no pre- 
cipitate forming, it was presumed no bromaniline or bibromaniline 
had been formed. 
Cadmium Salt . — Chloride of cadmium gives, with strong solutions 
of the hydrochlorate, scaly crystals of a double salt, moderately 
soluble in water. 
Copper Salt . — On adding chloride of copper to a solution of the 
liydrochlorate, and evaporating over sulphuric acid, small granular 
crystals of a beautiful green colour are obtained. 
Mercury Salt . — If a strong solution of chloride of mercury is 
added to a concentrated solution of the hydrochlorate, beautiful 
white scaly crystals precipitate out immediately ; but if the solu- 
tions are dilute no precipitation takes place, if the solution is now 
warmed, a crystalline substance is thrown down. TJiis appears the 
more curious, when it is known that the other salts cannot be 
heated without decomposition. 
When the hydrochlorate is heated with potash the phosphaniline, 
at the moment of separation, appears to undergo decomposition, for 
the smell of aniline is apparent even in the cold, but no precipita- 
tion takes place, so that phosphaniline must be itself soluble in 
water. An attempt was made to obtain it in the separate state by 
acting on the hydrochlorate with oxide of silver, a precipitate of 
chloride of silver was formed immediately. The filtered fluid was 
alkaline to test paper ; it clearly contained phosphaniline, but on 
evaporating the fluid it became coloured, owing to the decomposi- 
tion of the base, which is very changeable, and cannot be obtained 
in the pure state. 
