248 
Plate IX 
Figs. 49-78. — Heidenhain-Breinl’s stain. 
Figs. 49-50. End stages of pear-sliaped division. 
51 - Division of small nuclei before separation of daughter cells. 
52. Division of large nuclei before separation. 
53 * Formation of a second small nucleus («). 
54 “ 78 . Formation of large bifiagellate parasites. 
54, 55. Swelling up of nuclei, in intra-cellular parasites. 
Fig. 56 .--Division of enlarged small nucleus. 
57 - Extrusion of chromatin from the nucleus. 
Digs. 58, 59. Swelling up of nucleus in three parasites. 
Fig. 60. Transformation of large nucleus. 
Fig. 61.—Formation of flagella. 
Figs. 62-64. Stages in the extrusion of chromatin from the nucleus, 
Fig. 65.—Formation of second flagellum. 
Figs. 66 , 67 and 69. Large elongated bifiagellate forms. 
Fig. 68. Extrusion of two masses of chromatin from the nucleus. 
Fig. 70. Large flagellate form after extrusion of chromatin, 
containing a number of large granules. 
g" 71 - Division of extruded chromatin and disappearance of the 
remains of the original nucleus. 
Figs. 72-78.—Stages in the development of large bifiagellate forms 
with characteristic nuclei. 
