PLATE 4 
EXPLANATION OF FIGURES 
32 and 33. Anaphases of first oocyte division. > 700. 
34 Metaphase of second oocyte division. X 700. 
35 Copulation of pronuclei; same egg as figure 27. x 700. 
36 Post-oogonial nuclei with chromatin masses. The cells are connected 
by protoplasmic strands or tubes. 
37 Longitudinal section through portion of an egg string of a larval ovary. 
x 400. a, Stage a, oogonial region; b, Stage e, synizesis; c, Stage f, post-synap- 
tic spireme; d, Stage h, dyad or tetrad chromosomes in nurse cells; e, eggs and 
nurse cells well differentiated. 
38 and 39 Stage c; the chromatin masses are transformed into small irregular 
fragments which later assume a thread-like form. 
40 Stage d; presynaptic leptotene. 
41 and 42 Two groups of protoplasmic tubes with branches. 
