532 Wisconsin Academy of Sciences, Arts, and Letters. 
in ice water, gives rise to no precipitate but to a most disagree- 
able smelling solution from which I have not yet succeeded in 
isolating a definite compound. 
As soon as the above work is carried out in detail in several 
of its many ramifications I expect to study the action of boron 
halides on aldehydes, ketones and other typical classes of or¬ 
ganic compounds and compare the results with those usually 
obtained with free halogens or the halides of phosphorous and 
aluminum. 
