抄録
A modification of Erdös method has been made of the method and amount of administ ration of phenylhydrazine hydrochloride. A com arison between intravenous administration and intraperitoneal one showed that the latter way of administration gave a consistent time-period for the minimum red cell count (Table II). The administration of thirty mg phenylhydrazine hydrochloride per kg body weight which usually resulted in decrease of 50 to 70 per cent in red cell count, was adopted since its variation during the daily consecutive sampling of the blood over nine days was found within the range of 80 to 106 per cent (Table I).
The reliability of the present method for the estimation of the antianaemic potency in the liver has been discussed. The data obtained for the commercial liver-preparations (Table III) and some discussions on discordant data reported in the literatures led to a conclusion that the method employed could be esteemed to have the appreciabe reliability.
