... of the direction of the wind. The effect of the ventilators should, of course, be checked by experiment. Paper No. 5202. " TheDeterioration of Concrete in Contact with Sewage." t By SOLOMOSINMONMORRIS,B Assoc. M. Inst. C.E. Correspondence. Mr. E. J. Guild observed that there might be a possibility of con...

... of these investigations are summarized as follows :- (l)Main Pumping Station. The sides of the pumping wells and cross struts, well above any possible contact with sewage, show marked signs of deterioration. The effect is much greater inthat portion of the well in which the pumps are operating to the disposal works than...