THE CHROMATIN MASSES OF PIROPLASMA BIGEMLNUM. 323 



absent, in the case of Piroplasma. The pathogenic agents 

 of kala-azar and hcemoglobinuria would not appear^ then, 

 to belong to the same genus. Howevei', the evidence at 

 present available is conflicting, and furthei- discussion is 

 premature. 



Fehruary 14th, 1907. 



VIII. References to Literature quoted in the Text. 



1. Koch, 11., 1906. — "Beitrage zur Eiitwickluugsgescliichte der Piro- 



plasmen," 'Zeitsclir. f. Hyg.,' liv, July 26lh, 1906, pp. 1-7, 3 pis. 



2. Kleine, F. K., 1906. — " Kultivierungsversuche der Huudepiroplasmen," 



' Zeitschr. f. Hyg.,' liv, pp. 8-16, 2 pis. 



3. Laveran, a. et Nicolle, M., 1899. — " Coutribution a I'etude de 



Pyrosoma bigeminu in," ' C. K. Soc. Biol.,' li, pp. 718-751, 15 

 text-figs. 



4. LiJHE, M., 1906. — "Zur Kenntniss von Bau und Entwicklung der 



Babesien," ' Zuol. Anzeiger,' xxx, pp. 45-52. 



5. LiJHE, M., 1906. — " Die in Blute sciimarotzenden Protozoen und iliie 



iiaclisten Verwandten,"iu Mense's ' Handbuch deiTropeiikrankheilen,' 

 Leipzig, Bd. iii ('Babesia,' pp. 193-202, taf. 8). 



6. Mesmil, F., 1905. — " Cbroniidies et questions connexes," 'Bull. Inst. 



Pasteur,' iii, pp. 312-322. 



7. MiNCHiN, E. A., 1903. — "Sporozoa," in Lankester's 'Treatise on 



Zoology,' pt. i, fasc. 2, pp. 150-360 ('Piroplasma,' pp. 269-270, 

 fig. 80). 



8. NuTTALL, G. H. P., and Graham-Smith, G. S., 1906.—" Canine Piro- 



plasmosis. — V. Further Studies on the Morphology and Life-History of 

 the Parasite," ' Journ. Hygiene,' vi. No. 5, pp. 586-651, 3 pis. 



9. ScHAUDiNN, F., 1901. — " Generations- und Wirtswechsel bei Trypano- 



soma und Spirochsete. Vorlaufige Mitteilung," ' Arb. a. d. Kaiserl. 

 Gesundheitsamte,' vol. xx, pp. 387-439, 20 figs, (see p. 438). 



10. Smith, T., and Kilborne, F., 1893. — " Investigations into the Nature, 



Causation, and Prevention of Texas or Southern Cattle-Fever," 

 'Eighth and Ninth Ann. Hept., Bureau of Animal Industry,' pp. 177- 

 304, with 10 pis. Washington, U.S.A. 



11. Woodcock, H. M., 1906. — "The Hgemoflagellates : a Review of Present 



Knowledge relating to the Trypanosomes and Allied Forms," part ii, 

 ' Quart. Journ. Micr. Sci.,' N.S., 50, ii, June, 1906, pp. 233-331. (See 

 p. 244, footnote 3 ; pp. 253-266 [fig. 37] and p. 269. Also " Biblio- 

 graphy on Leishman-Donovan Bodies," p. 330.) 



