26 BOTANICAL GAZETTE [JULY 
S. 23, 24, 25, 26. Position of the chromosomes in the daughter nucleus after 
first mitosis; nuclear membrane formed. 
Fic. 27. Nuclear membrane has disappeared at the prophase of the second 
mitosis, and the chromosomes, still showing the form and characters present when 
reaching the poles after the first mitosis, are satan, to move to the nuclear plate 
of the second mitosis. 
Gs. 28, 29, 30. Later stages as the chromosomes are approaching the nuclear 
plate. The U form is closing up by the folding of the arms, and in some, transverse 
division has taken place so that they form a pair of rods; in a few the ends of the 
arms met and form a ring, which simulates the form of chromosomes in the 
heterotypic division. 
Fic. 31. End view of nuclear plate stage in second mitosis. 
IG. 32. Side view with spindle established, the chromosomes presenting much 
the same form as in the first mitosis, from the closing up of the arms of the U and 
the cross division at the junction of the arms. 
S. 33, 34, 35. Different stages in the och of the transversely divided 
a sieet at the nuclear plate in second m 
Fic. 36. Three different forms of the renee Sethe as they are ae to the 
poles in the second mitosis; the V form; hooked, or J form: ; and the rod form, 
depending on the point of attachment of the spindle threads; all in he same 
pee 
8, 39. End view of spindle showing chromosomes approaching the poles 
at the on of the second mitosis. 
