308 DR. KANE ON THE CHEMICAL HISTORY OF PALLADIUM AND PLATINUM. 
One source of the origin of the body D. (Gros’s base) is thus explained, but it may 
be produced directly from the fawn-coloured substance as follows : — 
One atom of B Pt 2 Cl 5 Ad 2 H 7 0 4 ) pf Q[ A<J R Q 
Five of ammonia ..... Ad 5 H 5 J 2 0 7 12 4 
produce 
Two atoms of Gros’s base . . 
Three atoms of sal-ammoniac. 
In this case no brown substance (C.) should be formed. 
The origin of the body E. from Gros’s base has been already noticed. 
Pt 2 Cl 2 Ad 4 PI 6 0 4 
Cl 3 Ad 3 H 6 
Pt 2 Cl 5 Ad 7 II 12 0 4 . 
