PART FI. THE CHAIRMAN (Mr. Holm) said that he would like to have an expression of opinion as to whether compulsory dipping was practicable or advisable unless it was carried out universally and noted the effect which dipping might have upon the immunity of native stock to tick borne diseases. Mr. VAN DEN ABEELE said it was the difficulty of universal application which had suggested to his Government that the matter should be brought before the Conference, as it had appeared to them useless in certain countries to introduce pure stock unless dipping was made universal. THE CHAIRMAN (Mr. Holm) stated that in regard to Kenya no compulsory dipping existed, either for native or for European stock. The Cattle Cleaning Ordinance was passed in 1920, but it was recognised that the element of compulsion should not be applied until Government could give financial assistance in cases where the farmer was unable to erect a dipping tank without aid. Mr. VAN DEN ABEELE sald that it was the desire of his Government to build dipping tanks at Government expense. COLONEL DOHERTY suggested that perhaps what the Belgian delegate desired was to establish comparisons between the value of dipping applied to Europeans and the native reserves respectively. It was quite evident that dipping was useless unless the Government was able to control the movement of cattle, as it was possible for Huropeans to maintain clean pastures with fencing and dipping while infection existed in the neighbouring areas. Mr. VAN DEN ABEELE referred to differential legislation in respect of the dipping of cattle and Mr. Holm said ‘that it seemed to be quite useless to force one class of stock-owners to dip their cattle, and not the other and that unless it was made universal to all stock- owners, native or European, in the same district good results could not be obtained. COL. DOHERTY stated that dipping without fencing was very unsatisfactory, even when an attempt was made to control East Coast fever on a single farm. Mr. WORTLEY emphasised the importance of controlling the: movement of stock. COL. DOHERTY pointed out that in most cases the boundaries between permanently infected and non-infected areas were natural boundaries and that the incidence of East Coast fever was governed by the ability of the tick to maintain itself uninterruptedly; this. depended on conditions of moisture and warmth. Mr. WORTLEY said that in the southern area of Nyasaland they had cleaned up an infected areca and made dipping compulsory. The European farmers allowed the natives to use their tanks on payment. THE CHAIRMAN (Mr. Holm) stated that in certain native areas in South Africa compulsory dipping was laid down. Stock Inspectors had been appointed to see that natives brought their stock regularly to. the Government dipping tanks, and he had learned that in Natal and Transkei this procedure had been very successful. The following Conclusion was adopted : — That under existing conditions the compulsory dipping of cattle by natives is. at present, impracticable over extensive. areas. 70