asked the Lord President of the Council whether he is now in a position to give, from the facts obtained by the Building Research Centre, Department of Scientific and Industrial Research, the analysis of the results of research as to the over-all percentage of efficiency of heat from the raw coal delivered to a house with a flue wholly within the house for coal, for gas and coke and electricity, all with modern appliances.

I regret that I am unable to give this analysis at the moment, but I hope to be able to write to the hon. Member shortly.

Can the right hon. Gentleman say when that information will be available and whether it will be generally published?

I will consider that last point and will get the information as soon as I can. I do not think that it will take long.