DIFFERENTIAL SUSCEPTIBILITY IN POLYCHETES 43 



LITERATURE CITED 



Child, C. M. 1900 The early development of Arenicola and Sternaspis. Arch, 

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1906 Some considerations regarding so-called formative substances. 

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1911 Studies on the dynamics of morphogenesis and inheritance in 

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1913 Studies, etc. VI. The nature of the axial gradients in Planaria 

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1915 c Axial Gradients in the early development of the starfish. 

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1916 a Axial susceptibility gradients in the early development of the 

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1916 b Axial susceptibility gradients in algae. Botan. Gaz., vol. 62. 



1916 c Experimental control and modification of larval development 



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1916 d Further observations on axial susceptibility gradients in 



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 Hym.\x, L. H. 1916 An analysis of the process of regeneration in certain micro- 



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Chaetopterus pergamentaceus Cuvier. Jour. Morph., vol. 10. 



1897 a The origin of the egg centrosomes. Jour. Morph., vol. 12. 



1897 b The earh' development of marine annelids. Jour. Morph., 

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1898 The origin and behavior of the centrosomes in the annelid egg. 

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Wilson; E. B. 1892 The cell lineage of Nereis. Jour. Morph., vol. 6. 



1904 a Experimental studies on germinal localization. I. The germ 

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