ing-cloth where it is left until the following day. Then 

 the substance is put under the press (a kind of case, in 

 the sides of which holes are made covered with linen) in 

 order to extract all the water that it might yet contain. 



The indigo is now cut in tablets which are laid 

 on long wooden benches for 25 days in order to dry. 



The last manipulation the tablets have to undergo 

 before being ready for sale is their polishing after leaving 

 the mould. By this means they become of a brilliant pur- 

 ple colour. ^) 



§ 6. The production of indigo in the isle of Java 



1) For the Natal indigo some manufacturers work with warm water; they 

 than uae whitewash, the exesa of which they remove by acidified water. 



