vi as did non-appreciation that % values for bought-in solutions (notably ammonia) may be on a weight basis, not made evident by the manufacturer. Notwithstanding the shortcomings or lateness of some texts, authors are thanked for compiling them amidst other pressures. Elsevier and the American Chemical Society are also thanked, for Figures now reproduced with source acknowledgement. This Editor has generally respected authors' phrasing, whilst shuddering when the term 'incubate' is encountered in a 0 context. He remains a 'diehard' in certain respects, notably in favouring 'M' rather than...

vi as did non-appreciation that % values for bought-in solutions (notably ammonia) may be on a weight basis, not made evident by the manufacturer. Notwithstanding the shortcomings or lateness of some texts, authors are thanked for compiling them amidst other pressures. Elsevier and the American Chemical Society are also thanked, for Figures now reproduced with source acknowledgement. This Editor has generally respected authors' phrasing, whilst shuddering when the term 'incubate' is encountered in a 0 context. He remains a 'diehard' in certain respects, notably in favouring 'M' rather than...