DEVELOPMENT OF SPELERPES BILINEATUS 243 



Keibel, F. 1905 Zur Gastrulationsfrage. Anat. Anz., Bd. 26. 



King, H. D. 1901 Experimental studies on the egg of Bufo lentiginosus. Arch. 

 Ent. Org., Bd. 13. 



1902 The gastrulation of the egg of Bufo lentiginosus. Am. Nat., 

 vol. 36. 



1903 The formation of the notochord in the amphibia. Biol. Bull., 

 vol. 4. 



KoNOPACKA, B. 1908 Die GestaltungsvorgangederinverschiedendenEntvvickel- 

 lungsstadien zentrifugierten Froschkeime. Bull. Acad. Sc. Cracovie. 



Laquer, E. 1909 tjber Teilbildungen aus dem Froschei und ihre Postgenera- 

 tion. Arch. Ent. Organ., Bd. 28. ' 



Morgan, T. H. 1902 The relation between normal and abnormal development 

 of the embryo of the frog as determined by injury to the yolk-portion 

 of the egg. Arch. Ent. Org., Bd. 15. 



1904 The relation, etc. III. As determined by some abnormal forms 

 of development. Ibid., Bd. 18. 



1905 The relation, etc. VI. As determined by incomplete injury to 

 one of the first two blastomeres. VTI. As determined by injury to the 

 top of the egg in the two- and four-cell-stages. VIII. As determined 

 by insufficient aeration. X. A reexamination of the early stages of 

 normal development from the point of view of the results of abnormal 

 development. Ibid., Bd. 19. 



1906a The influence of a strong centrifugal force on the frog's egg. 

 Ibid. Bd. 22. 



1906b The origin of organ-forming materials in the frog's embryo. 

 Biol. Bull., vol. 11. 



Morgan, T. H. and Tsuda 1893 The orientation of the frog's egg. Quart. 

 Journ. Micr. Sc, vol. 35. 



Morgan, T. H. and Boring 1903 The relation of the first plane of cleavage and 

 the grey crescent to the median plane of the embryo of the frog. Arch. 

 Ent. Org., Bd. 16. 



Morgan, T. H. and Torelle 1904 The relation between normal and abnormal 

 development. IV. As determined by Roux's experiment of injuring 

 the first formed blastomeres of the frog's egg. Ibid., Bd. 18. 



MosKOWSKi, M. 1902a Zur Frage des Urmundschlusses bei Rana fusca. Arch, 

 mik. Anat., Bd. 60. 



1902b Zur Analysis der Schwerkraftwirkung auf die Entwicklung 

 des Froscheies. Ibid., Bd. 61. 



1903 tJber den Anteil der Schwerkraft an der Entwicklung des Fros- 

 cheies mit besonderer Berticksichtigung der jungsten experimente 

 Kathariners. Verh. Anat. Gesells. 



