86 ANALYSIS AND ADULTERATIONS OF BUTTEE. 



It will be observed that Mr. Estcourt takes the specif 

 gravities at a temperature approaching as nearly as possib 

 that of boiling water. He places, however, but little reliani 

 upon the specific gravity test, for he advises, " as the be 

 practical method of estimating fairly the percentage of adu 

 teration, that after the gravity has been obtained, the fati 

 acid determination be made," especially in cases which ma 

 result in legal proceedings against the vendor. 



PARDON AND SON, PBINTEBS, PATEBNOSTBB BOW, LONDON. 



