Structural Applications of Concrete Staves in America

V.-CONCRETES AT BASIC WATER CONTENT. Several tests were made at basic water content using 25 F.A. mixed in three proportions, the ratios of cement to mixed aggregate by bulk being approximately 1:8, 1:5, and 1:2 1/2 or 3. J. Singleton-Green

Unlike the great exhibition of 1851, where a colossal experiment in constructional engineering in glass and iron reacted upon the building methods of the whole civilised world, the far larger exhibition at Wembley is in some respects less ambitious and clings fairly closely to the normal methods of design and construcfion. Colour is also lacking, and the British Empire Exhibition is probably the first in which the principal palaces have been left in the unpalatial and retiring hue of dingy grey. Adequate performance of function should take precedence over artistic presentation, and the vast crowds at Wembley view the exhibits in reasonable comfort. W. Harvey

As announced in our last issue we propose, in conjunction with the Bennett College, Sheffield, to publish each month a simple problem in Graphic Statics, for the best solution of which the Governor of the Bennett College will award a prize of 10s. In allotting points, neatness will receive the same consideration as accuracy.