
          way, but could not get it fully free
 from the Yellow [precipitate?] which presents
 its use as a precipitant for Copper.
 I then?tried the simple Cyanide of
 Potassium with an equivalent of sulphur.
 I fused them together in a test glass
 & when cool dissolved it out with
 water. The solution reacted beautifully with
 the iron test  & gave no [Mack?] precipitate
 with a neutral Copper salt. A [?]
 white was the color of the precipitate
 from which it contains no excess of
 sulphur as S.K. I evaporated the
 solution and got white [prismatic?] Crystals of the
 sulpho cyanide - is the plan new?


 A.A. Hayes was along here a
  couple of weeks ago. I met him visiting
 the Smithsonian. He had some business
 with the Patent office - not directly
 but as indirectly will affected [two?] and
 the application of some parties who have
 been distilling - Heavy oils from Coal
 by Violettes plan of hot steam.
        