NUCLEOPLASMIC RELATIONS IN ARCELLA 



47 



18. In most cases the nuclear number of the offspring differed 

 from that of the parental piece, and the diameter and nuclear 

 number of the original parent was very quickly regained. 

 Several of the famihes, however, were discarded before this was 

 fully accomplished. 



Fig. 34 Arcella polypora. Outlines of specimens showing where they were 

 cut in two. The uninucleate part of A became the progenitor of line ape. 7 and 

 the binucleate part of B became the progenitor of line ape. 9. X 207. 



TABLE 18 



Arcella polypora. Family ap. 5. Table showing the number of nuclei and 

 diameter of original parents used in the cutting experiments; the number of 7iuclei 

 in the pieces; and the mimber of nuclei in and the diameter of the offspring of 

 the pieces. The unit of measurement is 4.3 n 



NUMBER OF LINE 



Ape 1. 

 Ape 3. 

 Ape 4. 

 Ape 5. 

 Ape 6. 

 Ape 7. 

 Ape 9. 

 Ape 14 

 Ape 16 



11 



3 a 



THE JOURNAL OF EXPERIMENTAL ZOOLOGY, VOL. 30, NO. 1 



