ADAPTATION IN CLEAVAGE. 67 



LITERATURE. 



1. Child, CM. A Preliminary Account of the Cleavage of Arenicola 



cristata, with Remarks on the Mosaic Theory. Zool. Bulletin. Vol. i. 



1S97. 



2. CoNKLiN, E. G. Cleavage and Differentiation. Biological Lectures. 



Delivered at the Marine Biological Laboratory. 1896, 1897. 



3. CoNKLiN, E. G. The Embryology of Crepidula. Journ. of Morph. 



Vol. xiii. 1897. 



4. CoNKLiN, E. G. See summary of a paper delivered before the Ameri- 



can Society of Morphologists at the Ithaca meeting, December, 1897. 

 Science. March, 1898. 



5. EisiG, Hugo. Zur Entwicklungsgeschichte der Capitelliden. Mitth. 



aus der Zool. Statiott zu Neapel. Bd. xiii. 1898. 



6. LiLLiE, Frank R. Preliminary Account of the Embryology of Unio 



complanata. Journ. of Morph. Vol. viii. 1893. 



7. LiLLiE, Frank R. Embryology of the Unionidae. Journ. of Morph. 



Vol. X. 1895. 



8. LiLLiE, Frank R. Centrosome and Sphere in the Egg of Unio. Zool. 



Bulletin. Vol. i. 1898. 



9. Mead, A. D. The Early Development of Marine AnneUds. Journ. 



of Morph. Vol. xiii. 1897. 



10. Treadwell, a. D. The Cell-Lineage of Podarke obscura. Prelimi- 



nary Communication. Zool. Bulletin. Vol. i. No. 4. 1897.. 



11. Whitman, C. O. The Embryology of Clepsine. Qiiar. Journ. of 



Micr. Science. Vol. xviii. 1878. 



12. Whitman, C. O. The Inadequacy of the Cell-Theory of Development. 



Biological Lectures. Delivered at the Marine Biological Laboratory. 



1893. 



13. Wilson, E. B. The Cell- Lineage of Nereis. Journ. of Morph. 



Vol. vi. 1892. 



14. Wilson, E. B. Considerations on Cell-Lineage and Ancestral Remi- 



niscence. Annals of the New York Academy of Sciences. Vol. xi, 

 No. I. 1898. 



