SIR,-AS you are aware, the Building Acts Committee of the Council has for some time past had under consideration the question of t,he use of cavity walls and hollow brick construction.
Mr. W. MUIRHEAD, M.1nst.C.E. (Member), proposing a vote of thanks to Mr. Wallis for his paper, said he had indicated the direction in which we must go in connection with the facing of concrete. The possibilities were unlimited, and the thanks of the Institution were due to Mr. Wallis for having given the members the benefit of his experience.
Mr. H. A. WHITAKER, before presenting his paper, said that the subject was not new to the Institution, since Mr. H. W. Coultas had read a paper on it to the Midland Counties Branch in 1930. In the present paper, however, he had treated the subject in a somewhat different way, and had brought out more recent developments.
ALTHOUGH there have been a number of papers read within the past few years before Professional Societies on the artistic treatment of concrete, I make no apology for contributing yet another, since it is a subject regarding which we are daily gaining more and more knowledge through practical experience. Thomas Wallis
A very interesting paper on Troubles Bridge Foundations, by Mr. H. E. Brooke - Bradley, appeared in The Structural Engineer, December, 1933. It quite rightly stressed the importance of scientific soil investigations prior to the study and choice of a design for a bridge. The same paper also mentioned cases of serious trouble having arisen through unforeseen settlements of a bridge abutment. DIPLOM-INGENIEUR G. TSCHEBOTAREFF.