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(1967) and (d) as (b) but with 10% NaCI added to the diluent reagent.This finding is substantiated by the results from 67 different sera analysed in duplicate by the manual and the modified AutoAnalyzer methods (Fig. 1). Although there is good correlation between the two methods (correlation coefficient r = 0-995), the results given by the latter method are higher (regression coefficient b = I -I).An attempt to improve further the modified AutoAnalyzer method by increasing the concentration of NaCl from 5 to 10% was unsuccessful (Table). The use of sera with known iron content to replace the standard iron solutions is the ideal way of correcting the discrepancy. However, this is not always practicable and it is suggested that a correction factor (-10%) should be applied to results obtained by the AutoAnalyzer procedure.

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We have been favoured with the following interesting account of a post-mortem by Dr. Moxon:-Polypoid Titmour of the Laryn..1!, stopping the cesophagus; senile organs.-A man, aged sixty-five, a cabman, was in Guy's Hospital, suffering from difficulty in breathing and swallowing, with progressive emaciation. He had to be fed by the oesophagus tube. Laryngoscopic examination showed a growth, apparently occupying both pharynx and larynx. The dyspnoea, became intense, and tracheotomy was performed. He lingered a month after this to reach the last stage of emaciation, and slowly sank. The post-mortem examination, by Dr. Moxon, showed a growth, of the size of a chesnut, attached by a narrow root to the right aryteno-epiglottidean fold, and contriving so to place itself that it lay over the larynx during the effort to breathe, when the pharynx was at rest, while it stopped up the oesophagus during the attempt to swallow. In this way :-We need not say that the second stage of deglutition includes two movements for the protection of the larynxfirst, the larynx itself is carried upward and forward, and, second, the root of the tongue is carried backward, the two motions combining to place the larynx under the root of the tongue, while the food passes back and down on its course.

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