§ 57. Mr. G. Darlingasked the Minister of Agriculture, Fisheries and Food if he is aware of the increasing use of diesel-engined cattle wagons for the transport of animals; that in many the exhausts are so placed as to pour gases continuously into the wagons, causing distress to the animals and harm to public health; and whether he will make regulations to ensure that exhaust gases pass over the roofs of such cattle wagons.