220 THE USE OF IODINE IN BLOWPIPING. 
Tl I—Similar to Pb. 
Cu, I,—White crystalline powder: melts at red heat, so- 
lidifying to a brownish-white mass which yields a 
green powder. 
Ag I—Light yellowish powder. 
Hg, I,—Greenish powders or yellowish crystals which, 
on heating, become red, then darker red. 
Hg L—Scarlet crystalline powder, yellow on heating. 
Hg I,—(Mercury periodide) brown crystalline powder. 
Sn I,— Yellowish red. 
Sb I—Brownish red. 
Bi I,—Greyish black. 
Bi OI—Copper red crystalline mass. 
TABLE NO. 2. 
COLOR OF IODIDE COATS. (Haanel.) 
ARSENIO—A reddish orange. 
Lrap—A chrome yellow. 
Tin—A brownish yellow. 
SILVER—A bright yellow while hot, faint grayish yel- 
low when cold ; is close to the assay. 
ANTIMONY—An orange red. 
MeERcuRY— Scarlet and yellow, the yellow changing 
completely to scarlet on standing. 
SELENIUM—A reddish brown. 
TELLURIUM—A purplish brown. 
BismutH—A chocolate brown, fringed with red near the 
assay. 
CospaLtT—A_ greenish brown edged with green; the 
brown color is evanescent, changing into faint green, 
especially when breathed upon. 
MoLyBpENUM—A deep ultramarine; is close to the 
assay and is the permanent oxide, Mo, O;. 
iy sO = 
