80 



be boiled over again, and would give a little oil, for even if 

 there were basins for half-a-mile, even the last would give 

 some particles. 



The husks, after having been taken away from the press, are made 

 use of to keep up the fire under the boiler, and the water 

 boiling. These husks form also an exccellent kind of grease. 



As to the white crust, or remainder of the kernels that remain in 

 the basins 5, 7, 8, they have to undergo the same operations 

 as the black crust. Finally, the valve is opened ; but, as this 

 basin is furnished with an iron grate, it is only the water that 

 can escape, and the white crust remains dry. This crust is 

 sold for heating the furnaces, and the profit made with it is 

 sufficient to pay the wages of the men employed in the 

 refinery. 



