R. L. KAURA and S. GANAPATHY IYER                   203

(Table II). There was only a transient local congestion of the feather folli-
cles. Although the reaction was not very suggestive of successful trans-
mission of the disease from pigeons to the fowls, yet, their subsequent immunity
test against fowl-pox virus showed that they had developed the immunity.
Doyle and Minett [1927], Findlay [1930] and Irons [1934] obtained similar
results by the inoculation of fowls with pigeon-pox virus. Two control fowls
Nos. 56 and 57 were inoculated with fowl-pox virus alone. They reacted
typically unlike the three fowls that received the Indian strain of pigeon-pox
virus previously.

Four more fowls that were inoculated with the Indian, strain of pigeon-
pox virus from Pigeon No. 3, (Table I) on 13th June 1936, were tested with
our stock fowl-pox virus, along with two healthy controls on 25th June 1936
(Table II). All the fowls that received a dose of the Indian strain of pigeon-
pox virus reacted mildly to it and later resisted the test dose of fowl-pox virus
which produced the disease in the two healthy controls. This showed that
the Indian strain of pigeon-pox virus, like the English strain of the same
virus, can be used as a live vaccine against fowl-pox.

                                       TABLE II

Experimental transmission of the disease in fowls and cross immunity tests with
                                    fowl-pox virus