Abstract
The administration of less than 5.0 mg of atropine or scopolamine exerts no remarkable influence on the general development of chick embryo, but has some influence on the excretions of in organic substance and nitrogen into the allantoic fluid. In the histological examination, it was found that atropine and scopolamine induce the slight hepatic disturbance in chick embryo, and this effect is stronger in the case with scopolamine