N. H. SWELLENGREBEL 
461 
Mincliin seems not to have noticed (1909). It is not always to be seen, 
sometimes only one chromatic granule is present. 
Degenerated flagellates may sometimes be observed, in which the 
blepharoplast has lost its compact structure. In tliese cases the presence 
of an achromatic and chromatic substance becomes particularly clear 
(Diagram II). The blepharoplast is swollen and the two chromatic 
granules wide apart (fig. 1). Subsequently the chromatic part is broken 
up into many granules, still united by the swollen achromatic substance 
(figs. 2, 3). We shall have occasion to refer again to this degenerative 
hypertrophy of the blepharoplast. 
Diagram II. 
Fig. 1. Swollen blepharoplast. Protoplasm showing “periplast line.” 
Fig. 2. Isolated flagellum with corresponding blepharoplast. 
Figs. 3—4. Hypertrophied blepharoplasts. 
(c) The flagellum seems often to be free from the blepharoplast. 
At its base the basal granule is frequently though not always to be seen. 
Sometimes an achromatic (pink) filament is seen uniting the base of the 
flagellum to the blepharoplast. This filament was mentioned by 
Rosenbusch (1909) and by Breinl, Moore and Hindle. In degenerated 
cells it may be seen that the flagellum and the blepharoplast are really 
connected: the blepharoplast has lost its definite structure, the proto¬ 
plasm does not stain well ; the achromatic part becomes particularly 
clear and is always united to the base of the flagellum (Diagram II). 
In normal cells where the protoplasm is well stained, this filament is 
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