230 Caroline McGii.l, Nucleoli During the Oogenesis of the Dragon-fly. 



Fig. 64 is from a living cell examined in normal salt-solution. 



Fig. 53 — 54. The basiphile part of the double nucleolus has separated 

 into a heavy chromatic spireme. Yolk-nuclei are well formed. 



Fig. 55 — 56. Chromatic spireme beginning to break up into a coarse 

 reticulum. 



Fig. 57 — 59. As differentiated by the method of Obst. 



Fig. 60. A cell from near the oviduct. Growth almost completed. 

 The heavy spireme giving off large numbers of chromatic granules to 

 form the chromatic reticulum. Yolk-nucleus scattered through the cytoplasm. 



Fig. 61. Basiphile body breaking up. 



Fig. 62 — 63. Chromatic reticulum again reformed. Only a few 

 remains of the spireme are present. 



Fig. 64. Cell as examined fresh in normal salt-solution. The cyto- 

 plasmic reticulum and the linin are obscure, but all other structures are 

 very distinct. Note the alveolar structure of the yolk-nucleus. 



