Some Disturbing Factors in Cement Setting

THE intention to apply to the ruins of Tintern Abbey only such repairs as would not affect the beauty or the antiquarian interest of the building very seriously complicated the difficulty of its preservation by the Historic Buildings Branch of H.M. Ofice of Works. William Harvey

ALTHOUGH this Conference is to deal chiefly with the properties and uses of cements we think that engineers and users of cement generally will be interested to receive some account of methods investigated by British Portland Cement Manufacturers, with the object of reducing the cost of manufacture, and so-of the utmost importance to the user-of reducing the cost of the finished cement. J.W. Christelow

ALTHOUGH the angle is the section most commonly used as a strut, we have had some doubt in the past as to the actual strength of steel angle struts when connected in the manner commonly employed in roof-truss, trestle and other framework. In Bulletin No. 218, issued by the United States Bureau of Standards, results are given of an investigation into the subject made by Messrs. A. H. Stang and L. R. Strickenberg.