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H. S. WILLIS. 



segments usually travel greater distances in a given length of 

 time than do small ones. This is shown in the results recorded 

 in Table III. In this table are given the lengths of four intact 

 specimens together with the rate of locomotion per minute, and 

 the length of body, and the rate of locomotion in the nucleated 

 and enucleated parts cut from the four intact specimens. 



TABLE III. 



Relation between rate of locomotion and length of body in four intact specimens 

 of Amoeba and in the nucleated and enucleated parts of these four specimens. 



The table shows that the larger intact specimens and the 

 larger nucleated parts travel greater distances per minute than 

 do the smaller ones. It also shows that locomotion in the 

 enucleated parts is very much slower than it is in the nucleated 

 parts. This is, however, more clearly shown in Table IV in 



TABLE IV. 



A comparison of the rate of locomotion in millimeters per minute in the nucleated 

 and the enucleated parts of ten different individuals. 



Nucleated Parts. Enucleated Parts. 



O.I5 O.OO2 



0.13 0.074 



0.13 o.oio 



0.18 0.020 



O.I3 O.O08 



0.15 o.no 



0.16 o.ooo 



0.19 0.006 



0.17 0.006 



0.13 0.004 



which the rate of locomotion in nucleated and enucleated 

 segments of the same individual is compared. Each number in 

 the two columns of this table represents the average rate of 



