31 the his ad, Of ar 85. Subject to the necessities of the Service, officers may be granted by the Governor vacation leave on full salary not exceeding in all one week’s leave in the United Kingdom for every completed calendar month of total residential service in West Africa, plus the time necessarily taken on the journey to the United Kingdom, and, if the officer is returning to West Africa for further service, the time necessarily taken on the journey from the United Kingdom to the Colony. No additional leave will be granted in respect of any fraction of a month. If an officer on vacation leave instead of proceeding fo the United Kingdom is allowed by the Governor to proceed to another country, the leave in respect of the journey or journeys shall be the time necessarily taken on the journey to or from such country pro- vided that this is not greater than the time necessarily taken on the journey to or from the United Kingdom. 86. Vacation leave may be granted without any special grounds after 18 consecutive calendar months of residential service in West Africa. An officer will not be required to serve a tour of more than 924 consecutive calendar months’ residential service except in special circumstances, and the Governor may, should he think fit, grant vacation leave to any officer at any time after he has completed 12 con- secutive calendar months’ residential service. Within the above limits the actual length of each officer's tour shall be at the discretion of the Governor, who will take into consideration the necessities of the service, the character of the station or stations at which the officer has been serving, and his medical history. Vacation leave on full-salary may also be granted by the Governor to an officer after less than 12 con. secutive calendar months’ residential service in West Africa (a) if he is invalided from West Africa or (b) in