56 
Sai'cocystis gazellae n. sp. 
method. In this case spores were only found close to the cyst wall. 
The greater part of the cavity was filled with a granular debris doubt¬ 
less derived from the disintegration of degenerated spores (fig. 7). The 
chamber-forming network of the “plasmareste” is visible throughout; 
it is denser at the centre of the cyst. 
I am indebted to Mr George Buchanan both for the drawing and the 
microphotographs. 
EEFERENCES. 
Balfour, A. (1912). The Value of Vital Blood Staining in the Study of the 
so-called “ Infective Granule.” Brit. Med. Journ. i. 362. 
V. Betegh, L. and Dorcich, P. (1912). Studien liber Sarkosporidien. Cent. f. 
Baht. Orig. 1 Abt. 63. 387-390. 
Minchin, E. a. (1912). An Introduction to the Study of the Protozoa^ 419-420. 
Probst and Francis (1910), quoted by S. von Prowazek in Archiv f. Schiffs- 
und Tropen Hyg. xiv. 17. 558-559. 
Ross, P. H. (1910). Sarcosporidiosis, in Nairobi Laboratory Reports, i. 37-39. 
Teichmann, E. (1912). Sarcosporidia, in Ilandbuch der Pathogenen Protozen (von 
Prowazek), Barth. Leipzig, Part 3. 345-354. 
DESCRIPTION OF PLATES VIII AND IX. 
Figs. 1 to 7. Sarcocystis gazellae n. sp. 
Fig. 1. Free spores ( x 1000). Stained Giemsa. 
Fig. 2. Ordinary spores and large binucleate type of mother)?) cell (xl800). Stained 
Giemsa. 
Fig. 3. Ordinary spores and different type of large binucleate mother cell (x 1800). 
Stained Giemsa. 
Fig. 4. Longitudinal section through a cyst full of spores ( x 20). Stained Giemsa. 
Fig. 0 . Section of cyst, showing the cyst wall, peripherally placed mother cells, and 
spores lying in clusters in the cyst chambers (x 640). Stained iron haematoxylin. 
Fig. G. Free spores, stained ultra vitam by toluidin blue. 
Fig. 7. Longitudinal section through a cyst, the greater portion of which contains no 
spores. Those present occur round the periphery ( x 20). Stained iron haematoxylin. 
