1892. ] NEW YORK ACADEMY OF SCIENCES. 167 
Scarlet Lac Spirits. 
Solution— 
BNO... : a A : . 20 gms. 
HCl : ‘ : : : re Ons 
H,O : ; : ; : PA ce 
So. 2 ; ‘ : : <opebpa: 
Lac ; , : : Pee Sas 
Tartar +. , : ‘ ; 2) Ae mM. 
Spirits 1.5 gms 
Boil 20 eA cool down; enter wool, boil 1 ho our; soak over 
night. 
No. 2 (10068, 10069). 
Dye : : : : ga Aves. 
SnCl, : . F : : 3 yy OLG.em. 
Oxalic Acid. : . 2 a Oe aes. s 
HCl ges! 
Boil 14 hours. Enter wool cold; raise to boil slowly. 
Note well.—Add HCl, 4 or 5 drops, to about 25 ce. H,O; rub 
this up with the dye and allow to stand over night. : 
MADDER. 
Red.—No. 1 (10077). 
Mordant first— 
Al,(SO,), 0.6-1 0 gm. 
Tartar é f ‘ : 2A 5=0:8). 04% 
Madder . 6.0-8.0 gms. 
Begin dyeing at 40° C.; ; raise to 80°-100° C. dur ring 1 hour, 
continue 1 ‘hour, wash, and dry. 
The shade is ‘brownish-red, brightened by adding small amount 
SnCl, to dye-bath at close of operation ; better colors, 1-2 per cent. 
weight of Madder in Chalk. 
The best results are obtained at 80° C.; add 0.6 gm. Sumach to 
bring out color. 
abe ange.—No. eh coed ea 
SnCl, : : et NOLS vert. 
Tartar ee ; ; - ae) ah 
Madder 6.0 gms 
No, 2a. Same (single ee 
SnCl, ; ; : : = 20.4. gm: 
EC; H Oe 0.2 
Brown. 
CuSO, . : : : : + (HOG: pr hits 
Tartar: f " ; é a eh arcs ** 
Mordant and dye. 
