35 Mr. Philips Priceasked the Secretary of State for the Colonies the approximate expenditure which has been incurred on the experiments and work carried out under the auspices of the Colonial Research Council since 1948 on the spraying of insecticides from the air in East Africa; whether he is aware that no up to date or full information has been published about this important scientific work; and whether arrangements will now be made to rectify this omission.
§ Mr. LytteltonApproximately £210,000 has been spent directly on the hire of aircraft and the purchase of insecticides for this work; and the cost of the unit engaged in it is approximately £192,000 to date. It is difficult to assess how much of the latter amount can be attributed to the air spraying experiments since these form only a part of the unit's researches.
The answer to the second and last parts of the Question is that four scientific papers have been published and that another five will appear this year.