delivered the opinion of the court.
Gen. No. 33,888.
*628Opinion filed April 22, 1930.
Rehearing denied May 5, 1930.
E. S. and J. W. Cummings, for appellant R. F. Conway Co.; Frank E. Dingle, for appellants W. H. Warford and Subway Engineering Co.; Moses, Kennedy, Stein & Bachrach, for appellant C. H. Wilcox; E. S. Cummings, Frank E. Dingle and Walter Moses, of counsel. Church, Haft, Robertson & Crowe, for appellees.
delivered the opinion of the court.