488 POODS AND FOOD ADULTERANTS. 



NOTES ON TABLE No. 20. 



The number of stearines examined is not large enough to fix a standard 

 of comparison. Those of interest in the study of mixed lard are the 

 prime lard and oleo- stearines. The cotton-oil stearines are not very 

 extensively used in lard adulterations. The dead hog-grease stearines 

 are never used for this purpose. 



The specific gravity of the oleo stearines is slightly below that of th<^ 

 prime lard stearine samples, and both are less than the specific gravity of 

 pure lard. The melting point of both stearines is above that of lard. 

 In the column containing the refractive indices those marked with an 

 asterisk are of samples of different origin from the remainder of the 

 table, but they are believed to be good representative samples. The 

 mean index, however, should be determined from a much larger number 

 of samples.* It will doubtless be found to be somewhat lower than the 

 index of pure lards taken at the same temperature. 



The rise of temperature on mixing with sulphuric acid is much less in 

 the case of the stearines than with pure lard, showing that this pheno- 

 menon is chiefly characteristic of oleiue. The stearines of cotton oil, 

 however, show an increase of temperature comparable with that of 

 the original oil, and lard stearine a much greater increase than oleo. 



The low iodine equivalent of oleo-stearine has already been noticed 

 and is strikingly shown by the data in the table. The cotton-oil steariues 

 show a marked decrease from the numbers obtained for the oil itself. 



Armour's larfls. 

 No. 



5352. Pure refined family lard, Washington, D. C. Affidavit of W. L. Hill. 

 5557. Kettle refined lard, Mobile, Ala. Affidavit of F. H. McLariiey. 

 5559. Pnre refined family lard, Maeou, Ga. Affidavit of T. Skeltou Jones. 



5561. Choice refined family lard, Macon, Ga. Affidavit of T. Skelton Jones. 



5562. Choice refined family lard, Kansas City, Mo. Affidavit of T. Skeltou Jones. 

 5564. Pure refined family lard, Savannah, Ga. Affidavit of Isaac G. Haas. 



5572. Choice family lard, Saint Louis, Mo. 



5581. Choice family lard, Kansas City, Mo. Affidavit of E. K. Converse. 

 5584. Pure refined family lard, New Orleans, La. Affidavit of E. K. Converse. 

 5595. Pnre refined family lard, Philadelphia, Pa. Affidavit of W. L. Hill. 



5610. Pure refined family lard. Affidavit of George H. Webster. 



5611. Pure refined family lard. Affidavit of George H. Webster. 



5653. Superior compound lard, Boston, Mass. Aflidavit of Frank W. Bennett. 



* The analytical data show that oleine has a higher refractive index than stoai inc 

 or palmitine. 



