Bui. 1046, U. S. Dept. of Agriculture. 



Plate II. 



Fig. I. — Removable Canvas Covers Used in the Wheat-Rust Nursery 

 TO Retain Moisture. 



A urediriiospore sprayer is shown in operation. 



Fig. 2. — Pot Containing Rusted Seedlings from the Greenhouse. 



Used in esfablisliing infection centers in the wheat-rust inirsery. 



