472 [Assembly 



A piece of cotton cloth must go through seventeen processes 

 before it is properly prepared for printing ; and they are, accord- 

 ing to Parnell — 



1. Washing in c<jld water. 



2. Soaking for eight hours in boiling lime water, 



3. Washing in cold water. 



4. Souring. 



5. Washing. 



6. Soaking for ten hours in a dilute solution of soda-ash. 



7. Washing. 



8. Chemicking 



9. Souring. 



10. Washing. 



11. Soaking in solution of soda-ash. 



12. Washing. 



13. Chemicking. 



14. Souring. 



15. Washing 



16. Soaking in hot water. 



17. Squeezing and dyeing. 



In almost every process of cloth dyeing, the color is applied 

 by one of four proceeses. 



1 . From two solutions : the coloring matter not held by either 

 separately, but produced by a mixture of the two. The cloth 

 is first impregnated with one solution, and then with the other. 



2. From the solution of the coloring substances which com- 

 bines with the coloring matter, forming an insoluble compound. 



3. From the solution of the coloring matter itself, the cloth 

 having been previously prepared. 



4. By a chemical alteration of the fibre of the cloth, with the 

 formation of a colored product. 



