Chemistry and Physica, = BAQ 
ae Just as in presence of platinum sponge, hydrogen peroxide = 
blues: potassium iodide and starch and guaiacum tincture, and _ 
becomes gradually decolorized by the action of the H,O,, a clear 
proof that the oxidation is not due to the direct action of the pal. 
tum-hydrogen. Traube therefore comes to the conclus: 
; palladium-hydrogen does not evolve active hydroge 
act 
