As for the estimation of the weight and size of human internal organs many datas have already been published in Japan as well as in other foreign countries. The majority of them were based on the materials of pathological cases, and only a few were based on the materials of sudden deaths. Approximately 1800 autopsy cases are handled by the Medical Examiner Office of Tokyo-to yearly. Using these materials, we intended to determine the normal value of the weight and size of the internal organs of the Japanese. For this purpose, cases with little or no pathological changed were selected. The materials used for this statistical study are as follows: cyanide poisoning 473 cases, other poisonings 60 (cases with relative long clinical course were excluded), asphyxia 329 (most of them were newborn or sucklings), accident 312 (mostly traffic accident, deaths caused by hemorrhage were excluded), electric shock 27, death by shock and others 9, a total of 1250 cases. The organs were weighed and measured during autopsy. The results obtained are as follows. TABLE I Absolute weight of internal organs
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