A comparison of the variability of sonic Poctens from the 



East and West Coast of the Un. States. 



Mark Anniversary Volume. 1903. 



Davenport, C. B. 59.4.1. 



Quantitative studies in the evolution of Pecten. 

 HI Comparison of Pecten opercularis from three localities of 

 the British. Isles. 



Proc. Amer. Acad. Arts, and Sc. Vol. XXX IX. Nov. 1903. 

 Dim on, A b. Camp. 59.4.3. 



Quantitave study of the effect of environment upon forms of 

 Nassa obsolel.a and Nassa trivittala from ( 'old Spring Harbor 

 Long Island. 



Biom. Vol. II 1902. Nov. S. 



Duncker, G. 59.4.3. 



Bemerkung zu dem Aufsatz von H. C. Bumpus the variations 

 and mutations of the introduced Littorina. 

 Biol. Centralbl. Vol. XVII. 1898. H. S. 

 Glaser, 0. C. 59.51. 



Statistical study of Mitosis and Amitosis in the Entoderm of 

 Fasciolaria tulipa, var. distans. 

 Biol. Bullet. Vol. XIV. 1908. 



Biom. I Aug. 1902. S. 



Howe, J. L. 5943 



Variation in the Shell of Helix nemoralis in the Lexington 



Va Colony. 



Amer. Nat. Vol. XXXII Dec. 1898. 



