214 BOTANICAL GAZETTE [march 



Fig. 65. — A tangential section of a young spindle, showing spindle and con- 

 necting fibers. 



Fig. 66. — Tangential section of a spindle, making a multipolar figure. 



Fig. 67. — Section showing tripolar figure. 



Fig. 68. — Section showing spindle torn by the knife. 



Fig. 69. — Torn section, showing spindle fibers cut and spread apart by the 

 knife. 



Fig. 70. — Spindle with poles cut away showing two large nucleoli in the cyto- 

 plasm outside of the spindle. 



Fig. 71. — Spindle, showing pole and aster at one end, the other pole being 

 cut away. 



Fig. 72. — Spindle with both poles cut off. 



Fig. 73. — Another spindle with both poles cut. 



Fig. 74.— Spindle showing first stage of metakinesis, the two large chromo- 

 somes being to one side. 



Fig. 75. — Metakinesis stage. 



Fig. 76.— First stage of daughter star, showing the separated chromosomes. 



Fig. 77.— Daughter star stage. 



Fig. 78.— Late daughter stars. 



Fig. 79.— Daughter star, showing the twelve small chromosomes. 



Fig. 80.— Loose daughter skein stage, showing the beginning of contraction 

 of the chromosomes. 



Fig. 81.— Daughter skein, showing the close massing of the chromatin. 



Fig. 82.— Daughter skein, showing close massing of the chromosomes below 

 the pole. 



daughter chromosomes. 



formation of daughter net, showing the irregul 



Fig. 84.— Further development of the daughter net. § ... 



^ Fig. 85.— Resting stage of daughter nucleus, the chromosomes being 

 evident as irregular masses. 



