APPENDIX 2.

The Director, Veterinary Department, S.

Khartoum, Sir, We have the honour to present a joint report on our visit to the pan-African Veterinary Conference held at Nairobi, Kenya Colony, from April 6th to April 14th 1923.

The proceedings of the Conference were taken down verbatim. They are being printed, and copies will be forwarded to you in due course. It will therefore appear redundant to present here a lengthy report on the discussions on animal diseases and stock economics, but we wish to draw attention in this report to questions arising from the discussions which might be considered to have a special bearing on veterinary interests in the Sudan, and to include such subjects which were not actually discussed at the Conference.

1. CONTAGIOUS BOVINE PLEURO-PNEUMONIA.

The most interesting subject, from our point of view, in connection with this disease is that of protective inoculation.

At the Veterinary Pathological Laboratory of Kenya Colony, the question of the manufacture of an artificial vaccine, as distinct from the field virus (lymph from an actual case of the disease) as used in the Sudan, has been extensively investigated, and the Veterinary Pathologist of Kenya is of opinion that the method of vaccinating against Contagious Bovine Pleuro-pneumonia is greatly superiqj' to the old method.

Captain Knowles had the opportunity of working in the Vete¬ rinary Laboratory of Kenya, and studying closely the technique employed in the production of this vaccine.

Experiments will be started at Khartoum as opportunity occurs for the preparation of this vaccine, to test its suitability for application in the Sudan.

A difficulty which presents itself in the Sudan is that, for the cultivation of the virus and the preparation of the vaccine against Contagious Bovine Pleuro-pneumonia, Martin’s broth is necessary.

Martin’s broth is made from fresh pigs stomachs which would be difficult to obtain in Khartoum. It is thought that this difficulty can be overcome by asking the Veterinary Laboratory at Cairo to carry out the first stage of the preparation of Martin’s broth, and to send it to Khartoum in that state.