470 Tryjmnosoma leioisi 
I do not know whether or not this leads to a triple division of the 
blepharoplast. In blepharoplasts where the chromatic portion is 
already divided (such forms occurring already in the chronic stage of 
infection) the two parts are only separated, but of course these forms 
cannot be distinguished from those resulting from a division of a 
blepharoplast with a single chromatic granule. 
Prowazek considers the chromatic part of the blepharoplast as the 
karyosome. Fig. 1 seems to indicate that this part of the blepharoplast 
governs the division of the whole organellum. 
I never .saw any sign of mitotic division of the blepharoplast as was 
described by Rosenbusch (1909), but my description corre.sponds perfectly 
with that of Moore, Breinl and Hindle. 
{d) Formation of the new flagellum. (Diagram X.) Moore, Breinl 
and Hindle affirm that the new flagellum is formed out of a granule 
arising from the blepharoplast. Laveran and Mesnil (1901) long ago 
stated that the new flagellum was formed by the separation of a part 
of the base of the old flagellum, this part growing out. This view, 
contradicted afterwards, is the correct one in my opinion. 
Diagram X 
Figs. 1—7. Production of a new flagellum. 
This process is best studied in the “ leptomonas-forms ” and small 
trypanosomes arising from the division of larger forms. In these cells 
the flagellum continues to divide when still verj'small. In fig. 1 a new 
flagellum has been formed and is dividing again. There are two basal 
granules present, out of the left-hand granule arises a tiny flagellum. 
