82 J. B. CLELAND AND T. H. JOHNSTON. 



appeared, 1, as scattered irregular granules throughout 

 the parasite, 2, as two or three irregular masses of large 

 granules, or as rods in various positions in the cytoplasm, 

 3, as a combination of (1) and (2), and 4. as distinct accu- 

 mulations at the two ends, which might be equal in amount 

 or one be decidedly greater than the other. 



The protoplasm stained sometimes very faintly, some- 

 times a little more deeply, and then had a granular appear- 

 ance. In some specimens irregular colourless spaces, often 

 of considerable size, could be seen, perhaps of a vacuolar 

 nature. The following is a description of twenty consecu- 

 tive full sized parasites, arranged according to the appear- 

 ances presented : — 



1. Very faintly stained. Melanin as irregular masses at 

 each end with a small one in the centre. 



2. Very faintly stained. Melanin as irregular masses at 

 each end. 



3. Very faintly stained. Melanin as irregular mass and 

 3 rods at one end. 



4. Faintly stained. Melanin as 3 rods at or near one end, 

 as one rod opposite the same end of the host nucleus, 

 and as 2 rods at the other end of the parasite. 



5. Faintly stained. Melanin as 5 bunched rods at one end, 

 as 4 scattered rods at other. 



6. Fairly but faintly stained, granular. Melanin as 7 

 small masses opposite and a little beyond nucleus. 



7. Fairly but faintly stained, granular. Melanin as 1 

 mass opposite centre with a rod shaped one external 

 to it, as another rod shaped mass opposite end of host 

 nucleus and as 2 small rods towards same end of 

 parasite. 



8. Fairly but faintly stained, granular. Melanin as a 

 mass at one end, a smaller one towards the other, and 

 a minute one in the centre. 



