3^ BOTANICAL GAZETTE 



[JANUARY 



in character, and does not necessarily disprove this function of the 



nucleolus. 



THE INDIV 



The 



impossible to distinguish individual chromosomes 



make 



chromosomes 



required by ^Ioxtgomery's hypothesis. According to the researches 



of MiYAKE (5) and Overton (8), supporting Strasburger's obser- 



mother 



prochromosomes, centers around which the chromatin collects, and 

 which correspond to the chromosomes in number. In Sarracenia I 

 was unable to satisfy myself that the pomts around which the chro- 

 matm collects were constant in number or that the number was the 

 same as that of the chromosomes. 



beha 



anj 



somes 



chromosomes 



possibly he m the Imin. The chromatin and nucleolus at the stage 

 represented m fig. ig stain red with safranin, while the linin takes the 

 green. This stam serves to bring out a fibriUar structure in the linin. 

 It IS well known that the chromosomes rb-ffpr arf^PfT,- in cfninma 



m 



At certain stages 



seem to lose a part of their substance and to diminish 

 as in stammg capacity; whereas at another period they arc 

 )sorb material, grow in size, and color more deeply. The 

 ^na described might therefore be explained on th^ assum 



absorbed 



them 



Philaoelphia Normal Schooi. 



I. 



2. 



LITERATURE CFfED 



^"^^^ \^^fl"'f^'^^ ^ ^^^ ^"^^^'^ and germ celk of Pedicdlim 

 cmertcana. B,ol. BuU. 8:347-362. 1905. 



DTrSt ^■' 7^1 ^^«'^-^ development of the pollen in certain swee 

 peas (Lathyrus odaratus). Proc. Camb. PhU. Soc. 13:151. ph. j,2. 1905 



