22 
NOTES ON THE COMMON PATHOGENIC 
completely hidden by it and hunting is thereby rendered 
practically impossible. 
While these huge tracts of waste land, where this grass 
grows, remain untenanted, the elephant and buffalo will 
therefore still have haunts to which they can retire unmolested 
by the advance of civilisation. 
NOTES ON THE COMMON PATHOGENIC PROTOZOA 
IN BRITISH EAST AFRICA 
By R. Eustace Montgomery, Veterinary Bacteriologist, B.E.A. 
In compiling these elementary notes on some of the more 
common pathogenic Protozoa, I have endeavoured to epitomise 
the modern literature, and so offer shortly a crude but, I 
trust, accurate synopsis of the species from a zoological and 
pathological point of view. 
Knowledge of the Protozoa is so imperfect and is pro- 
ceeding with such rapid strides that systematic treatment 
of the subject is well-nigh impossible. In view, however, of 
the. many deadly diseases of animals, and of man too, which 
are due to this Phylum, much attention has been devoted 
to its study within recent years. Mention of East Coast Fever, 
Malaria, and Sleeping Sickness at once indicates the progress 
that has been effected since the time when Laveran (1880) 
described the parasite of Malaria and Ross (1893) the life 
cycle in the mosquito, lays bare our ignorance, and exposes 
the enormous field of research which must be covered before 
results, which will materially benefit the position from the 
zoological or from the practical and commercial point of view, 
can be achieved. 
All the parasites discussed in the following pages are to be 
encountered in the blood of the affected animal and can be 
studied in the ordinary film of blood or of organs, stained 
by one or other of the modifications of Romanowsky’s method 
(Methylene blue — Eosin). No mention is made here of the 
