ROLE OF NUCLEUS IN CELL FUNCTIONS. 39! 



1. Within a few minutes after enucleation streaming ceases, 

 and the amoeba becomes a wrinkled sphere. 



2. In a few hours the streaming is resumed. 



3. This streaming is usually of the Umax type, though it may 

 approximate the normal. 



4. Enucleated amoebae may attach themselves to the sub- 

 stratum. 



5. Enucleated amoebae are irritable, but do not show the same 

 response to stimuli which nucleated amoebae show. 



6. Food organisms which enters the body of an enucleated 

 amoeba are killed and digested in an apparently normal manner. 



7. Enucleated amoebae may become divided by antagonistic 

 streaming currents within. 



BIBLIOGRAPHY. 

 Gruber, A. 



'86 Beitrage zur Kenntniss der Physiologic und Biologic der Protozoen. 



Berichte der Naturforschenden Gesellschaft zu Freiburg, i : 1-24. 

 Hofer, Bruno. 



'90 Experimented Untersuchungen uber den Einfluss des Kerns auf das 



Protoplasmas. Jena. Zeit. f. Nat., 17: 105-175. 

 Lynch, Vernon. 



'19 The Function of the Nucleus of the Living Cell. Am. Jour. Phys., 48: 



258-283- 

 Mast, S. O. 



'23 Mechanics of Locomotion in Amoeba. Proc. Nat. Acad. Sci., 9: 258-261. 

 Morgan T. H. 



'01 Regeneration of Proportionate Structures in Stentor. BIOL. BULL. 2: 



311-328. 

 Schaeffer, A. A. 



'20 Amoeboid Movement. Princeton Press. 

 Stole, A. 



'10 Ueber kernlose individuen und kernlose teile von Amoeba proteus. Arch. f. 



Entwick., 29: 152-168. 

 Willis, H. S. 



'16 Influence of the Nucleus on the Behavior of Amoeba. BIOL. BULL., 30: 

 253-270. 



