SAPONACEOUS PLANTS. 575 



There are also some soap barks and pods of native plants used iii 

 China. Several other plants have been employed in different coun- 

 tries as a substitute for soap. The bark of Quillaia saponaria 

 renders water frothy and is used as a detergent by wool dyers. 

 Saponaria vaccana is common in India. The pericarp of Sapindus 

 emarginatus mixed with water froths like soap. Saponaceous 

 berries are fouiid in Java. 



The soap-worts to which the genus Sapindus belongs are tropical 

 plants. The ft- nit of many species of Sapindus is used as a sub- 

 stitute for soap, as Sapindus acuminata, Laurifolius emarginatus 

 and detergens, ail East Indian plants. 



