M R . L. SCOTT WHITE, M.Inst.C.E., M.I.Struct.E., in proposing a vote of thanks, said that Mr. Sparkes had delivered a very technical lecture in a most interesting way. Road construction had made very rapid progress during the last thirty or forty years., in which the use of concrete had largely figured. Mr. Sparkes still found, after making many experiments in conjunction with his colleagues, that no final recommendations could be made on the subject, and it appeared that final conclusions were still a long way off. Meanwhile he had given much useful information which helped considerably in the study of the subject.