Central Hill Lambeth

The action of winds on the rough surfaces of cooling towers is often not taken into account. However, disregard of this factor when designing cooling towers can result in their unsatisfactory behaviour. Max A.M. Herzog

Mr. Bobrowski: Since the speed with which grandstands have to be built is such that it was virtually impossible to obtain up-to-date photographs of Sandown Park and Calgary before publication of the paper it should be useful to supplement the discussion with the following figures:

I was very interested to read the report of the discussion on this subject, and in particular, the reference made to the Forth Road Bridge, since I was deputy resident engineer on that project. B.G. Smith