CHAPTEK XIV. 



THE NEW METHOD OF POLISHING COFFEE BY 

 MEANS OF PHOSPHOR BRONZE POLISHERS. 



A FEW years ago some experiments were 

 carried out in the Eepublic of Salvador in 

 Central America by a well-known planter of 

 Santa Ana to polish coffee with a Smout 

 Polisher made of phosphor bronze instead of 

 the ordinary cast iron. The results were so 

 highly satisfactory that ever since this planter 

 has polished his coffee by this method. This 

 gentleman mentions that his coffee, having 

 obtained such a good reputation in the coffee 

 markets for its beautiful polish, due, according 

 to him, to the fact of it being polished in 

 phosphor bronze machines, he would not care 

 to depart from his present method of polishing. 

 It is also interesting to note that nearly all the 

 London coffee mills have adopted this method 

 of polishing, and also the majority of the mills 

 in Hamburg. The principal feature of this 

 process is that the phosphor bronze imparts a 

 bluish colour to the coffee, due to the phos- 

 phoric action of the metal and the friction 

 generated in the course of polishing. I must 



