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The differences in the course of the disease in addition to the slower 
appearance of symptoms, the later period of deaths and the smaller 
mortality, are that the conjunctival congestion and the discharges from the 
conjunctiva mouth and nose are much less. They may be scanty or even 
absent. Diarrhoea does not often set in till the third day and in some cases 
may not occur to a marked extent at all. The diarrhoea does not so rapidly 
become dysenteric and may not become so at all or may only remain so 
for one or two days. The animal frequently, even in a fatal case, will feed 
and ruminate till the fourth dav- 
The course of the disease as shown by the temperature in most cases 
is fairly regular. There is a sudden rise of temperature perhaps to 104 or 
over, and the temperature remains high, but usually with some morning 
intermission, for 6 days, when it falls rapidly, and in cases of recovery though 
it may be irregular for a few days there is a rapid improvement in the 
condition of the animal which in the course of a day or two will begin 
t to feed, to pass firmer motions, and to resume its normal aspect. 
In an unfavourable case the temperature after about the same period, 
6 to 7 days, may fall to subnormal and the animal die collapsed, or may 
remain high or even become higher and the animal die within 24 hours. In 
other cases though the temperature falls in a natural manner and does not 
rise much again the symptoms are only partly relieved, the animal will not 
feed, and dies in 3 or 4 days. 
The course in Siamese and Indian cattles is much the same but the 
mortality is greater in the Siamese. In the Selangor outbreaks Mr. Ford’s 
figures show that there were amongst go Siamese cattle 68 deaths, or 75 
per cent, mortality; amongst Indian cattle 90 cases with 48 deaths, or 53 per 
cent, mortality; amongst mixed breeds there were 10 cases with 6 deaths. 
On the whole there is more variety in the severity of the disease in the 
Siamese catde. These cattle are cheap and can be brought to Kwala 
Lumpur for some $50 to $60 per head. The Chinese usually feed them well 
and do not overwork them. The mortality amongst the Chinese owned 
Siamese cattle was 66 per cent. The Malays and Tamils and Pathans more 
often neglect and overwork their cattle, and cattle belonging to Europeans 
are sometimes left entirely in the hands of such employees. Amongst such 
groups of cattle the mortality was greater. For these figures I am indebted 
to Mr. Ford. 
One complication is the large proportion of cattle that harbour the 
Pirosoma bigeminum. When the cattle are in good health these parasites 
are only found after a prolonged search, and as none of the Siamese or 
Indian cattle ever show the ordinary symptoms of Texas Fever (Bovine 
Malaria) though freely exposed to infection, it is fair to assume that all are 
ordinarily immune to the effects of the parasites, and that probably nearly 
all harbour a small number of the parasites. Be this as it may in animals 
after an attack of Rinderpest these pirosoma are found in much larger 
numbers and often in much reduced cattle in such large numbers that it 
is difficult to avoid the conclusion that their multiplication occurring at the 
end of a serious illness such as Rinderpest is injurious and in part the 
cause of some of the fatal results. 
Post-mortem appearances in fatal cases of Rinderpest in cattle are slight 
as compared with those in the buffalo. In a fairly typical case all that may be 
found is congestion of the abomasum duodenum caecum and rectum with 
small submucous haemorrhages in one or more of these places. Ulceration 
