166 TRANSACTIONS OF THE [JUNE 6, 
No. 2. 
Cochineal . : : ‘ . 8.0-15.0 gms. 
Cochineal scarlet.—No. 2 (10054, 10055). 
First method: Mordant 1-15 hours with 0.6 gm. SnCl, eryst., 
0.4 Tartar; wash, and dye in 1.2 gms. Cochineal 1-1} hours; enter 
wool in mordanting and dye-baths at 50° C. and raise gradually to 
boiling. 
No. 3 (10056). 
Second method: Bath 4 full of water 
Oxalic Acid. : - F . 0.8 gm. 
1; a , : ~~ CBG 
Ground Cochineal. . |» ko ome: 
Boil for 5-10 minutes; then fill bath with cold w ater, introduce 
wool, heat to boiling-point (7-1 hour), and boil $ hour. Bath not 
exhausted in this method. 
Deficiency of tin causes dull bluish-red; an excess makes the 
scarlet paler. 
Lac. 
Dye : . : : ; - 1.00 gm: 
SnCl, ; : ’ : ‘ . 0.600 mee 
HCl , : : : ; so es: 
Oxalic Acid. 0.600 om. 
Boil 15 hours. Add the HCl to the dye and allow to stand over 
night. 
Chromium. 
Cr. O.7).: : : 2) Oem 
Same amount of Lac as above. Mordant; wash, and dye in 
separate bath 14 hours. 
Alumina. 
AL (SOR). : : : : ., U4 em: 
Tartare : : 2 . , Oconee 
Mordant; wash, and dye. 
Copper. 
uSO, 1.0 gm 
Tron, 
Peso, .. : : ; : . 0.8 gm. 
Tartar 2.0 gms. 
ee eee, 
