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GARY N. CALKTNS 



two divide (figs. 56 and 60). In all individuals the functional 

 pronuclei are only two in number and both come from the same 

 one of the four original nuclei. The others disappear by ab- 

 sorption, although they may persist until some time after the 

 union of proimclei. 



Fig. 56 Pair, each with two nuclei in the third maturation division. X 800. 



Fig. 57 Telophase of third division; four pairs of nuclei in one, three pairs in 

 the other individual. Macronuclei fragmented. X 800. 



Figs. 58 and 59 Nuclei in metaphase and anaphase of third maturation divi- 

 sion. X 3200. 



The early spindles of the third division are smaller (2 ^ wide 

 and 6 n long), but are similar in type to those of the second mat- 

 uration division (figs. 58 and 59). There are, again, four bars 

 of chromatin, or four chromosomes, and four are present in the 

 daughter nuclei after division (fig. 59), which is apparently 

 transverse. 



