
          in words. H� for uncombined hydrogen while combined 
 Hyd'n [hydrogen] is H simply - calling the latter an atom &
 the former a molecule. In the organic department 
 its adoption has numerous advantages.


 Have you any experience of the determination of Copper by 
 Sulpho Cyanide of Potassium, it is said to be more
 accurate than the determination by way of oxide, the proof 
 is this - Dissolve the Copper (ore) in NO5HO & dilute
 pass sulphurous acid gas into the mixture & while
 the soln [solution] is faintly impregnated with this gas, add sulpho
 cyanide of Potm [Potassium] to the solution, this precipitates all the
 Copper as Sulpho Cyanide & precip - nothing else.
 The iron is kept as protoxide by the SO2 - the copper is 
 calculated from the weight of S. Cyanide.


 Excuse this "Ma [?]" from


 Yours sincerely
 Thomas Antisell

        