270 Rinderpest 
In one of two domestic pigs inoculated with virus, the blood of which 
showed no such appearances before inoculation, although there was 
no reaction, numerous slender forms were found in blood on the fourth 
day (PI. XIX, figs. .55, 56, 57). In goats, which act as passive carriers 
for virus (which in them is active from about the 4th to 8th days after 
inoculation), the bodies could not be distinguished in any of the shapes 
occurring in cattle. The corpuscles of this animal however were observed 
to take on the unusual aspect figured in fig. 110. At each end of the disc 
protruded a long filament, resembling those jets of corpuscular substance 
well known to be produced under conditions of haemolysis, with the 
difference that there was in these cases no disruption of the corpuscles, 
and the shapes were maintained unaltered for periods of very many, ten 
or more, days of continued observation. 
Since the bodies persist for long periods after recovery from rinderpest 
in both buffaloes and cattle it is natural that they should at times be 
found also in beasts not known to have actually had or to have been 
exposed to rinderpest. The writer in the course of exten.sive examinations 
of supposed healthy control animals, found the bodies fairly frequently 
in Siamese cattle, but on no single occasion in any buffalo not known to 
have had or to have been exposed to the disease, nor at any time in 
buffaloes in districts in which rinderpest had not appeared. 
It is knowir that Siamese cattle are very largely immune to rinder¬ 
pest. The case-mortality among them during epizootics seldom exceeds 
one-third, and the herd-mortality' probably not one-fifth. They are 
imported from countries in which rinderpest is practically enzirotic. But 
with the Malay buffalo the case is very different. The case-mortality 
of undoubted rinderpest among them is often 90"/o) sometimes 100“/o- 
And as a rule the herd-mortality is not less severe, since by the time the 
pest has become recognised, almost every animal in a valley, under the 
conditioirs of communal pasturing, lias been exposed to infection. 
II. A netu rinderpest-like malady. 
In January 1912, my friend Mr L. V. Symonds, M.R.C.V.S., who is 
in cliarge of the Veterinary work in Negri Sembilan, was kind enough 
to show me some buffaloes, suffering from a disease, forming a limited 
epizootic, the clinical symptoms, and post-mortem appearances of which, 
in his opinion, indicated it to be true rindei’pest. His own observations 
* Meaning proportion of deaths to number of animals in a known herd, in a limited 
area where all are possible contacts. 
