The chairman said that there was little doubt but that further
investigation into electrolytic methods of chemical analysis would
give even more valuable results than those already obtained.
Systematic investigations of the subject, such as have been given by
Dr. Kohn, would go far to prove the adaptability of this method as a
substitute for or aid in ordinary qualitative examinations. The
remarks of Dr. Kohn respecting quantitative examinations were very
interesting, and well worth following up by other practical work.
Professor Campbell Brown said that Dr. Kohn had shown that electricity
brought the same kind of elegance, neatness, and simplicity into
analysis that it did into lighting and silver plating.
In its applications to the detection of poisons, he understood Dr.
Kohn to say that the poisons must first be extracted by chemical
means. That would not be sufficient, and he had no doubt that if the
subject was pursued farther they would have a paper from him (Dr.
Kohn) some day, indicating that he had obtained arsenic and such
poisons without the previous separation of the metal from organic
matter. It was a very great desideratum to have a method for detecting
arsenic and separating it from the contents of the stomach and food
directly without previous destruction of the organic matter, and he
hoped Dr. Kohn would pursue his work in that direction.
Dr. Hurter said he was about to construct a new laboratory, and he
would assure them that one of its arrangements would be the
installation of electricity, by which to carry out researches similar
to those described. He was very glad to learn that the presence of
arsenic, etc., could be readily proved by means of electrolysis.
* * * * *