146 D. H. WENRICH 



free extension is similar to the anterior flagella in length and 

 staining capacity. 



4. The chromatic basal rod is thicker in the middle and tapers 

 toward both ends. It appears to give origin to the outer row 

 of chromatic granules by a kind of budding process. 



5. There is a deeper row of chromatic granules near the 

 axostyle extending from behind the nucleus up to the blepharo- 

 plast. 



6. There is a parabasal body similar to the one described by 

 Janicki and Kuczynski. It has a position dorsal and to the 

 right of the nucleus. It varies in appearance and occurrence 

 from host to host, from flagellate to flagellate, and from one 

 fixative to another. It has appeared after the use of weak 

 Flemming's, Flemming's without acetic, and 1 per cent chromic 

 acid solutions. 



7. In the prophase of division the chromatin becomes organized 

 into six double (split ?) prophase chromosomes and the caryo- 

 some gradually disappears. A new chromatic basal rod grows 

 out from the blepharoplast and appears first as a row of fine 

 granules. It is connected with the small new blepharoplast 

 which a little later becomes budded off from the main, or parent, 

 one. The two blepharoplasts are connected by a paradesmose. 



8. Before the metaphase has been reached the axostyle becomes 

 detached from the blepharoplast and begins to disintegrate. 



9. In the metaphase six definite chromosomes are found, but 

 the two parts of each tend to separate in the late prophase 

 while the equatorial plate is forming. 



10. In the anaphase the chromosomes become granular and 

 each divided into two equal parts by a transverse constriction. 

 The body of the nucleus divides bj^ simple constriction, the 

 nuclear membrane persisting through the process. 



11. In the telophase six chromosomes, each doubled by the 

 transverse constriction, can be seen. These become organized 

 into the 'resting' nucleus. A new axostyle grows out from each 

 blepharoplast. The origins of the new parabasal bodies and 

 cytostomes were not definitely made out. 



