512 NOTES ON SOME PARASITIC PROTOZOA, 



remedy the defect, enter the circulating blood. This would 

 account for the number of the cells with basophile granules in 

 this case, as well as for the increase of nucleated red cells. 

 Further, there is indicated a close relation between the granular 

 cells and the still nucleated ones, the latter being of a still earlier 

 type than the former. 



The Director has shown us a photograph of cells with exactly 

 similar basophile granules from Piroplasmosis (Tick Fever) of 

 Cattle, obtained by him several years ago. Here the same con- 

 ditions causative of their appearance, that is profound anaemia, 

 would be present. Similar cells are occasionally found in man. 

 Dr. Tidswell at the same time reminded us of Tilrck's view that 

 the granules in question were not nuclear, but arose from the 

 cytoplasm. 



LITERATURE. 



1. Cleland— Journ. Trop. Med. Hyg. ix., 1906, p. 196; Austr. Assoc. Adv. 



Sci. 1907, p.516. 



2. Balfour— Journ. Trop. Med. Hyg. ix., March, 1906; Second Report 



Wellcome Research Lab. Khartoum, 1906, p. 110. 



3. Johnston— Agric. Gazette, N.S. Wales, xx., 1909, p.581; Proc. Linn, Soc. 



N. S. Wales, 1909, xxxiv., p.218. 



4. Cleland and Johnston — Journ. Proc. Roy. Soc. N. S.Wales, xliii., 1909, 



p. 75. 



5. Cleland— Proc. Linn. Soc. N. S. Wales, 1909, xxxiv., p.216. 



6. Ross, Moore, and Walker— Trans. Path. Soc. Lond. Iviii., 1907, p.99. 



7. Luehe, in Mense's " Handbuch der Tropenkrankheiten," ill., 1906, 



p. 184, etc. 



8. Johnston — Rec. Austr. Mus. vii., 1909, p. ,344. 



9. Minchin, in Ray Lancaster's Treatise on Zoology, Pt.l, fasc. ii., 1903, 



p. 268. 



EXPLANATION OF PLATE XLVIIL 



Figs, 1-11. — Mononuclear leucocytes of Mus decumamis containing Leucocy- 



tozoon nniris Balfour. 

 Figs. 1,4-10,— Ditto, from heart-blood. 

 Figs.2,3,11.— Ditto from liver-smear. 

 Figs.1,5,6,7,9.— Encapsuled forms, 

 Figs.2,4. — Host-nucleus partly divided by parasite. 



