38 FOODS AND FOOD ADULTERANTS. 



PLATE IX. 



FIG. 17. Buttcrinc, from Armour & Co., Chicago. Not boiled. Specimen taken di- 

 rect from tub as received July, 188(3. Magnified ICO diameters. 

 FIG. 18. Butterinc, from Armour &, Co., Chicago. Melted, filtered, and boiled. 



PL.VTE X. 



FlG. 19. Butterine, from Armour & Co., Chicago. Dissolved in boiling ether and 

 allowed to cool slowly. 



FIG. 20. Oleo oil, from Armour & Co., Chicago. Melted, filtered, an<l boiled. Al- 

 lowed to stand four days under cover glass. 



PLATE XL 



FIG. 21. Oleomargarine, from Armour & Co., Chicago. Not boiled. Specimen taken 

 direct from tub as received July, 1880. Magnified 160 diameters. 



FIG. 22. Oleomargarine, from Armour & Co., Chicago. Boiled with salt and watei 

 and allowed H;o cool slowly. 



PLATE XII. 



FIG. 23. Same as Fig. 22. 

 FIG. 24. Same as Fig. 22. 



