In 1906 and 1907, Jean Danysz, of the Pasteur Institute of Paris, conducted trials on Broughton Island, New South Wales, of a strain of "Pasteurella" bacteria he had developed, which proved to be specific to rabbits, but it proved to be a less-than-satisfactory control measure. Dr Danysz felt that Broughton Island was a poor choice of test site, and that extensive experiments should be conducted on the mainland. Frank Tidswell, who was his chief Australian collaborator, continued Danysz's trials after he left in 1907, and also began trials of the Yalgogrin, Gundagai, and Picton microbes (named for the stations where infected rabbits were found), but financial support was lacking from the Federal government, or the collaboration of affected states, that would be necessary to prove that the measure safe and effective. The fact that these pathogens did not wipe out whole populations might have raised doubts as to their efficacy.