278 Observations on Mammalian Erythrocytes 
stain has been mixed with the blood to retain the histological characters 
of the latter. 
In specimens in which the latter condition was fulfilled I found the 
solution used by Braddon to be an admirable preservative for blood- 
films; several preparations “ringed” with vaseline kept in perfect con¬ 
dition for over a month. This solution also brought out the parasites 
and degeneration in the diseased states but, naturally, did not differ¬ 
entiate the contents of the erythrocytes so well as Giemsa’s or 
Leishman’s stains. 
After prolonged examination of many films I was led to conclude 
that 
1. The appearances of erythrocytes in the morbid conditions 
examined were easily differentiable fi’om those described by Dr Braddon. 
2. That normal blood corpuscles from the above sources presented 
nothing like his description of the alleged parasite of rinderpest, which 
tends to support his view that what he describes is specific to that 
disease. 
