Abstract
1. Desoxyephedrine was loaded on the developing eggs which were left to undergo hatching. Those received more than 10 mg of desoxyephedrine by injection failed to complete the course of hatching, while those received less than 5 mg could complete hatching though there were some deaths in the course.
2. Growth of the embryo was disturbed in the latter stage of hatching and hydrops was observed to have developed in some embryos received more than 1 mg of desoxyephedrine.
3. Excretion of allantoic fluid was somewhat disturbed by the loading of desoxyephedrine.
4. When viewed by the amount of residual nitrogen excreted into the allantoic fluid, nitrogen metabolism was found to be generally inhibited on the embryos loaded with desoxyephedrine in comparison with their controls, and the amount of nitrogen excretion became smaller when a larger dose was loaded.
5. Excretion of vitamin B1 into the allantoic fluid too showed a tendency to diminish by the loading of desoxyephedrine.
