Investigators in the course of analysis of herbage samples appear to have treated the determination of moisture as one of the simple determinations which can hardly go wrong. Various workers have used dryi-ng ovens at 1000 - 103O and have left samples in the ovens for periods of six to twentyfour hours. Probably each worker has kept to a fairly constant procedure and by this means has obtained duplicates which agree within reasonable limits. Naturally they have taken the results so obtained to be correct.
