99. Young spermatocyte, element x attached to one end of a long, fine spireme.
100. Coarser spireme stage.
101-103. Bouquet stage.
104-105. Later spireme stage.
106. Various forms assumed by the combined nucleolus and element x; last figure from a giant cell.
107. Segmenting spireme.
108. Similar stage to fig. 107, one chromosome longitudinally split; element x present.
