U. S Dept, of Agr., Bui. 130, Otf'ce of Expt. Stations Irrigation Ini^estigations 



Plate XXII. 



Fig. 1.— Cast-iron Lining for Sluiceways Being Put in Place at thz Assuan Da 



M. 



Fig. 2.— Deep Foundation Work Near Western End of Assuan Dam. 



