... Re- (1) KR Rao, s. M. Birnbaum, RB Kingsley and J. P. Green- stein, J . Bid. ... Cobalt could not be detected in this ash either by the chemical procedure of Kitson4 or by a spectroscopic method sensitive to at least one part in a milli~n.~ The greater part of the ash ... 78 +311 + 67 ...