DEAR SIR,-The method of surveying railway bridges, described by Mr. W. P. S. Cockle in The Structural Engineer for September, 1934, records an interesting example of the projection of a point vertically, by the intersection of two vertical planes traced by a theodolite. The following is another example on a larger and more exacting scale:
Mr. Howard (President, British Section of the Societe des Ingenieurs Civils de France) proposed, and Mr. W. T. Halcrow, M.Inst.C.E., seconded a vote of thanks Dr. Faber.
THIS lecture is by way of being an interim description of the work which is being done at Durham, because that work is not yet complete. Portions of it, however, have been definitely completed, and I thought that the matter would be of sufficient interest to the members of the Institution to warrant giving them some informntion at this stage, without waiting may be two or three years for the whole of the work to be completed. Oscar Faber
THROUGHOUT the Continent of Europe the use of metallic arc welding for steel structures is increasing apace. The quantity of work, embracing upwards of one hundred railway bridges, thirty highway bridges, twelve multi-storey buildings of six to twenty storeys, and some hundreds of factory buildings, is sufficiently impressive, but it is the range and variety of the applications which is most significant. A. Ramsay-Moon