Abstract
The author investigated the influences of Cytochrome-C on the general development and various metabolisms of the chick embryo by giving Cytochrome-C to developing hen's eggs. The present work is divided into two parts. In the Exp. (I), the drug was administered prior to the incubation, and in the Exp. (II), the drug was administered on the 5 th day of incubation. The followings are the results thus obtained.
(1) In both of the Exp. (I) and Exp. (II), no systematic influences on the general development of the chick embryo were found exercised by the administration of Cytochrome-C.
(2) The Pyruvic acid contents in the allantoic fluid in the latter half of the incubation in the case treated with 300γ and on the 15 th day of incubation in the case treated with 600γ of Cytochrome-C in the Exp. (I) were evidently larger compared with those of the control eggs.
(3) The N-contents in the allantoic fluid in the cases treated with 300γ and 600γ of Cytochrome-C in the Exp. (I) were larger compared with those of the control eggs on the 12 th and 15 th day of incubation. In the Exp. (II), in the first half of the incubation period of the cases treated with 300γ of Cytochrome-C and on the 12 th and 18 th day of incubation in the cases treated with 600γ of Cytochrome-C, the N-contents in the allantoic fluid were found larger compared with the control.
(4) The Vitamin B1 contents in the allantoic fluid were investigated only in the Exp. (II) . They were found larger compared with the control on the 15 th day of incubation in both of the cases treated with 300γ and 600γ of Cytochrome-C.
