Fig. 23. This is an end view of the stage shown in figs. 20 and 21.
Fig. 24. The fainter lines are the fibers on the under side of the nebenkern.
Fig. 25. The blackberry stage, showing the mass of vesicles.
Fig. 26. This represents a nebenkern of the stage shown in fig. 7, drawn from a polar view, with adjusting focus.
PLATE II.
Explanation of Plate III.
Fig. 27. This shows the nebenkern elongating. The axial filament passes over its surface.