A. C. Coles 
45 
The average measurement of 20 specimens was 17'2/u. by 14’2/a; 
the largest, oval in shape, was 23’3 /x by 18'3 jx and the smallest, 
8'3 fL by 6‘6 /x. 
Some of these bodies, which stain a deep blue colour, contain only a 
few nuclear masses, whilst others are so densely crowded with smaller 
nuclear masses, that none of the background is seen, and the whole 
pai'asite consists of a dense mass of red granules packed closely together 
giving the general impression of a strawberry. I met with one such 
densely red stained body in the film made from the lung. It was almost 
perfectly round and measured 19/x in diameter. (Plate III, fig. 35.) 
Generally speaking the more numerous the nuclear masses the 
smaller they are, whilst in those bodies which contain few nuclear bodies 
the latter are considerably larger, and may measure 3 /x in diameter. 
The size and number of the nuclear masses vary considerably. 
When very numerous they are probably about 1 /x in diameter, but more 
usually they are about 2 fi. They are I'ound, oval or more usually 
irregular in outline and show very little structure when examined with 
the highest powers. The smallest number seen in one cell was four, 
the usual number about 15 to 25, whilst in some they were quite 
beyond count. Vacuoles are commonly found in all these parasites 
except those which contain very numerous nuclear bodies, and occasion¬ 
ally one can see a few of the latter lying free in the plasma as if they 
had recently escaped. 
I first met with these large and conspicuous bodies, remarkable 
alike for their size and brilliant colouring, in a film from the heart 
blood, and it was difficult to say what they represented. In general 
appearance they closely resembled a large free female leucocytozoon, so 
commonly met with in some films which contain many of these 
parasites, but differed from this by the presence of so many nuclei. 
I could however find no such bodies in any of the leucocytes in films 
from the peripheral or heard blood, only the free forms could be seen. 
I subsequently examined carefully the film made from the lung and 
here found a vei-y few similar bodies inside the leucocyte. 
I found in the lung film, which by the by consisted apparently 
only of capillary blood from this organ, a few large leucocytes containing 
a round or oval body in their protoplasm which had a large nucleus deeply 
stained red. (Plate IV, fig. 39.) These might have been ordinary young 
leucocytozoa, but they differed from these only in the relatively large 
nucleus they possessed. Next I met with a few leucocytes containing 
one or two leucocytozoa almost mature in size, which differed from the 
