middle^centuries philosophical and theological treatises, the 

 scholni meant, in general, addition and remarks. 



Corollarium are interpreted comments (339) . 



(96). The priority of the correct interpretation of 

 Baer's teaching about the embryonic plates and criticism of 

 erroneous opinions at the expense of Bischoff and Filipchenko 

 is belonging to T. A. Detlaf. Her opinions are included in 

 a doctor dissertation "Comparative- experimental study of 

 evolution of the ectoderm, chordomesoderm and their products 

 in Anamnia" (M., 1948) and later on in the article "Discovery 

 of the embryonic plates by K. F. Wolff and Kh. Pander and 

 the study on the embryonic plates of K. M. Baer" (Trudy In-ta 

 ist. estestovzi., V., 1953, pp. 281-316) (343). 



(97) The theory of the embryonic plates which is found 

 as a comparative- embryonic principle and expressed in the 

 works of Baer, met sympathy by the majority of his contempo- 

 raries -r-Rathke, Kost, Valentin, Remark and others — and deter- 

 mined the trend of their works. Among the few opponents of 

 the embryonic plates theory, it is necessary to mention 

 Reichert. The latter suggested an opinion, according to 

 which "temporary covering membrane" first exfoliates in 

 the egg of the frog and under its protection, the development 

 of the embryo takes place. The latter is concluded, according 

 to opinion of Reichert, in the gradual formation of the 

 animal system of the organs: — central nervous system, 

 intestinal system and, at last, the mucous membrane of the 

 digestive tract. In the embryo of the chicken, according to 

 Reichert, up to incubation there is only one- layered rudiment 

 thin skin, which gives the origin of integuments, and at the 

 time of incubation from the yolk subsequently develops the 

 central nervous system, intermediate membrane, containing the 

 chord and, at last, during the appearance of the head part 

 of the visceral tract, — a last membrane- like cellular cell 

 for the formation of the mucous membrane of the intestines. 

 Remak perspecaciously considered these opinions as containing 

 a progressive idea, because from Reichert 's point of view 

 it was possible to introduce amendments in these ideas of 

 Baer, as the separation of the central nervous system from 

 the semi-fluid contents of the spinal plate. At the same time, 

 Remak decidedly raised an objection against the opinion of 

 Reichert on the development in a layered appearance of 



638 



