asked the Minister of Transport if, in view of the. damage to the human lung which may be caused by diesel fumes, he will give a general direction to the British Transport Commission to secure a reduction in the emission of such fumes on railway trains, which frequently cause discomfort and distress to railway employees and passengers.

No; this is a matter of railway management for which the British Transport Commission is responsible. The Commission tells me that its standard instructions to maintenance staff are designed to ensure that smoke and smell from diesel locomotives and diesel multiple-unit trains are reduced to the minimum.