156 



CHEMISTRY OF FARM PRACTICE 



hot water and again filtered, acidified with hydrochloric acid, con- 

 centrated to about 10 cubic centimeters, and 1| cubic centimeters of 



c8 



ffi 



a platinum chloride solution (10 cubic centimeters containing 1 gram 

 platinum) added. This is then evaporated to a sirupy consistency, 



