NOTES. 463 



ovum, incubatum prioribus quinque diebus subit." Vicebergi, 

 1817. (Dissertatio inauguralis.) "Contributions toward the 

 history of the evolution of the chick within the egg." (" Beitrage 

 zur Entwickelungsgeschichte des Hiihnchens im Eie." Wvirz- 

 burg, 1817.) 



21 (i. 52). Karl Ernst Baer, " On the Evolution of Animals. 

 Observations and Reflections " (" Ueber Entwickelungsgeschichte 

 der Thiere. Beobachtung und Reflexion." 2 vols. Konigsberg, 

 1827-1837). In addition to this chief work, cf. " Story of the 

 Life and Writings of Dr. Karl Ernst Baer, told by himself " 

 ("Nachrichten iiber Leben und Schriften des Dr. Karl Ernst 

 Baer, mitgetheilt von ihm selbst." Petersburg, 1865). 



22 (i. 60). Albert Kdlliker. His "History of the Evolution of 

 Man and the Higher Animals " (" Eutwickelungsgeschichte des 

 Menschen und der hoheren Thiere "). The 2nd (corrected) edition, 

 1876, contains (pp. 28-40) a catalogue of ontogenetic literature. 

 On the newer contributions to this, cf. the " Jahresberichte 

 iiber die Leistungen und Fortschritte der Medicin " (Berlin), by 

 Virchow and Hirsch (the " History of Evolution," by Waldeyer) ; 

 also the "Jahresberichte iiber die Fortschritte der Anatomie und 

 Physiologic," by Hofmann and Schwalbe (Leipzig) ; the "History 

 of Evolution," by R. Hertwig and Nitsche. Most of Kowalev- 

 sky's researches are contained in the " Memoires de I'Acad&nie 

 imperial e de St. Petersburg " (from the year 1866). Others are 

 published in Max Schultze's "Archiv fur mikroskopische 

 Anatomie," and in other periodicals. 



23 (i. 60). Theodor Schwann, " Microscopic Researches into 

 the Identity in Structure and Growth of Plants and Animals " 

 (" Mikroskopische Untersuchungen fiber die Uebereinstimmung 

 in der Structur und Wachsthum der Thiere und Pflanzen." 

 Berlin, 1839). 



24 (i. 69). Ernst Haeckel, the Gnstnea Theory, phylogenetic 

 classification of the animal kingdom and homology of the germ- 

 layers. " Jenaische Zeitschrift fur NaturwissenscLaft," vol. viii. 

 1874, pp. 1-56. 



25 (i. 75). Ernst Haeckel, "The History of Creation." 

 London, 1876. 



G3 



