478 



APPARATUS FOR 



% Super-oxymuriate of potassa, - 12 



Flowers of sulphur, - - * ' ■ i 



Charcoal powder, - - - 2 



Gum Arabic powder, 1 

 This and No. 9. are fourth best. 



3. Super-oxymuriate of potassa, - 18 

 Flowers of sulphur, - 3 

 Gum Arabic, - - - - 1 



4. Super-oxymuriate of potassa, - 4.5 

 Flowers of sulphur, - - 1.5 

 Charcoal powder, - - - 1.5 

 Nitre, 2.5 



This and Nos. 5. and 8. are the third 

 best. 



5. Super-oxymuriate of potassa, - 4.0 

 Flowers of sulphur, - - 1.0 

 Charcoal powder, 1.0 



6. Super-oxymuriate of potassa, - 1.0 

 Sulphuret of antimony, - - 1.0 



This and No. 7. are fifth best ; but 

 they leave a hard cake of crocus of an- 

 timony, which adheres very strongly 



to the apparatus. 



7. Super-oxymuriate of potassa, - 1.0 

 Sulphuret of antimony, - - 1.0 



The proportions of this powder were ta- 

 ken by volume. 



8. Super-oxymuriate of potassa, - 2.0 

 Dried charcoal powder, - 1.0 



9. Super-oxymuriate of potassa, < 1.0 

 Dried charcoal powder, - 1.0 



