NATURAL HISTORY OF CUMINGIA TELLIXOIDES. 219 



in that it is obtainable in abundance, is readily fertilizable artifici- 

 ally, and it withstands laboratory manipulation without injury. 



BIBLIOGRAPHY. 

 This bibliography lists researches on Cumingia only. 



1. Browne, Ethel N. 



'10 The Effects of Pressure on Cumingia Eggs. Archiv fur Entwicklungs- 

 mechanik, Vol. 29, p. 243. 



2. Grave, B. H. 



'26 The Vitality of the Gametes of Cumingia tellinoides and Rate of Growth 

 at Various Temperatures. Anat. Record, Vol. 34, p. n?- 



3. Grave, B. H. 



'27 Analysis of the Spawning Habits and Spawning Stimuli of Cumingia 

 tellinoides. BIOL. BULL., Vol.42. 



4. Heilbrunn, L. V. 



'26 The Absolute Viscosity of Protoplasm. Jour. Exp. Zool., Vol. 44, p. 255, 



5. Heilbrunn, L. V. 



'25 Studies in Artificial Parthenogenesis. Jour. Exp. Zool., Vol. 41, p. 243. 



6. Morgan, T. H. 



'10 Cytological Studies of Centrifuged Eggs. Jour. Exp. Zool., Vol. 9. 



P. 593- 



7. Morgan, T. H. 



'10 The Effect of Altering the Position of the Cleavage Planes in Eggs \\itli 

 Precocious Specification. Archiv fur Entwicklungsmechanik, Vol. 29, 

 p. 205. 



8. Morris, Margaret. 



'17 A Cytological Study of Artificial Parthenogenesis in Cumingia. Jour. 

 Exp. Zool., Vol. 22, p. i. 



9. Jordan, H. E. 



'10 A Cytological Study of the Egg of Cumingia with Special Reference to 

 the History of the Chromosomes and the Centrosome. Archiv fill 

 Zellforschung, Vol. 4, p. 243. 



