NITRIC ACID ON VARIOUS VEGETABLES. 
429 
Bichloride of Platinum and Sparteine. 
Pmmaiic Symbols of the simple forms ^ — a 100, &010, wOll, e 101, ni 110. 
Angles between normals to the faces, — 
ah 90 6 
uh 37 18 
W 105 24 
ea 41 6 
ed 97 48 
ma 48 52 
mh 41 8 
mm! 82 16 
Double Mercurial Chloride of Sparteine. 
Prismatic '. — Symbols of the simple forms , — a 100, h 001, e 101, x210, 2 120, r 111. 
The angles between normals to the faces are, — 
ha 90 0 
za 65 39 
xa 28 55 
48 42 
ea 62 35 
ee' 54 50 
ra 65 46 
rb 63 3 
re 26 57 
rd 48 28 
rr" 53 54 
rV" 75 24 
Cleavage very perfect and easily obtained. 
The faces h, e, x are very narrow, and are usually altogether wanting. 
This salt was nearly insoluble both in water and in spirits of wine, but its solubi- 
lity in these liquids was greatly increased by the addition of hydrochloric acid. The 
salt was first dried in vacuo, and did not lose any additional weight though heated 
afterwards to 212°Fahr. The amount of hydrogen, it will be seen, is slightly in 
excess ; this arises from a small quantity of metallic mercury having sublimed into 
the chloride of calcium- tube. 
I. 0'785 grm. salt gave 0‘3105 sulphuret of mercury =0‘2676 Hg. 
II. 0’806 grm. salt gave 0*2750 sulphuret of mercury =:0*275 Hg. 
0*553 grm. salt gave 0*624 carbonic acid and 0*262 water. 
0*7145 grm. salt gave 0*7000 AgCl=0*1731 Cl=:24*22 per cent, chlorine. 
MDCCCLI. 3 K 
