964 Wisconsin Academy of Sciences, Arts, and Letters. 
Adulterations 
The examination of commercial samples of the oleoresins has 
shown that they are all adulterated at times. With respect to 
most of these preparations, adulteration is thought to be acci¬ 
dental, e. g. the presence of copper in nearly all samples due to 
the use of copper utensils in the manufacture of the same, or 
the use of ripe instead of unripe fruits in the preparation of 
the oleoresin of cubeb. In some cases, however, adulteration 
has been practiced with willful intention to defraud, as for 
example, the addition of fatty oils to the oleoresins of aspidium 
and cubeb. Other instances of this kind will be given con¬ 
sideration under the treatment of the individual oleoresins. 
