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definitely asserted to be rinderpest. In the Allahabad outbreak,
however, undoubted symptoms of rinderpest did develop in many of
the cases which succumbed later during the course of observations,
but in many of the fatalities occurring elsewhere the records pointed
to the development of a condition with acute blood destruction. He
had already retested a sample of serum returned from the Allahabad
dairy and found it to be protective at the dosage stipulated at issue,
but there had been quite an appreciable falling off in potency since
the time of the original test. He had been much exercised about
the manufacture of potent serum since he had taken over charge of
the laboratory, particularly as he had lost a short time after his
arrival the collaboration of Mr. Pool, who had evinced during his
tenure of office at the laboratory such extraordinary solicitude in this
matter that his competence was probably unrivalled. He had thus,
soon after Mr. Pool's departure, taken in hand the personal super-
vision of the manufacture and testing of all rinderpest serum and
made provision, as he thought, for the issue of anti-rinderpest
serum from the laboratory of sufficiently high potency so that it
could all be used safely for the "serum simultaneous" inoculation.
The occurrence of excessive mortality in the military dairies this
season had therefore come as a considerable surprise, and he was
sparing no pains to obtain information upon it which would enable
him to take steps to obviate these accidents in future. The results
of his investigations would be fully reported upon later. In order to
test the safety of the method with the use of the materials produced
at the laboratory he had deputed one of his colleagues (Mr. Bennett)
to carry out under his directions the immunization of the valuable
Pusa herd of cattle, comprising Montgomery and cross-bred Ayr-
shire-Montgomery cattle, and the results, upon 80 animals, which
he had only just learnt, had been completely successful.

    A priori, there would appear to be no reason to fear any accident
following upon the simultaneous inoculation provided an adequately
large dose of a sufficiently highly potent anti-rinderpest serum were
injected into the animal at the same time as the small dose of virulent
rinderpest blood. There was a great deal of recorded evidence
forthcoming from other countries pointing to the relative safety
and extraordinary efficacy of the method when applied to a consider-
able cattle population; he had in mind particularly the results
achieved in Egypt, in East Africa, and towards the conclusion of
the war in the zone bordering the southern limits of the territory
formerly known as German East Africa where the application of the
method effectually prevented the southward extension of rinderpest
into Southern Africa. In the Italian colony of Eritrea the wholesale
inoculation of all the cattle population every two years by this
method had been recommended. Moreover, the evidence showed.