gratulatur ordo medicorum Vratislaviensium interprete 

 Joanne Ev. Purkinje P. P. 0. Subjectae sunt symbolae ad 

 ovi avium historiam ante incubationem; cum doubus litho- 

 graphiis. Vratislaviae, typis universitatis (anno 1825, 

 mense sept, (edit.)* (log* Frid. Blumenbach from the 

 name of Bratislava physicians log. Ev. Purkinje was 

 congratulated on the occasion of being awarded a higher 

 honor in the field of medicine. The enclosed article is 

 about the history of birds' eggs till hatching with 

 two lithographs (Bratislava Published in September 1825 

 at the university printing-house) (298) . 



(90) Studying the embryological works of Baer, the 

 author of the present book did not possess at hand the 

 translation of "History of animals development" existing 

 now and he used the German text of both volumes in the 

 copy, preserved at the library of Moscow Society of 

 naturalists, as well as the text of the concluding part- 

 in the copy from governmental library of USSR named 



V. I. Lenin (302) . 



(91) Burdach published these materials in the second 

 volume of his "Physiology" (Die Physiologie als Erfahrung— 

 swissenschaft, herausgegeben von Prof. Dr. K. Burdach, 

 Leipzig, 1828— Geschichte des Froschembryo, S. 297-312 and 

 Geschichte des Huhnerembryo, S. 335-466). 



Unwarranted notes and rearrangement in the Baer's 

 text, which was done by Burdach, caused the indignation 

 of Baer who, due to this, considered it necessary to 

 publish his embryological article in a separate edition. 

 This in turn led to the displeasure of Burdach. Baer 

 stated in his "Autography" in detail the history of his 

 disagreement with Burdach (see p. 393 and the Russian 

 edition) (303) . 



(92) Rudiment (Keim) as called by Baer is the forma- 

 tion, which gives later on either the embryo (Embryo) , or 

 the non-embryonic blastoderm, which he called "rudiment 

 membrane" (Keimhaut) . In the commentary on the Russian 

 translation (edition of 1950) there was a suggestion to 

 translate the Baer's terms as follows: Keim-embryo, 

 Embryo- embryon. In fact, this removes the confusion in 

 the understanding, but allows a certain mistake against 

 the accuracy of the translation and purity of Russian 

 embryological terminology. 



636 



