Bui. 879, U. S. Dept. of Agriculture. 
Plate IX. 
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Cucumber Experimental Field and Soil Overwintering Test. 
A, Experimental field at Big Rapids, Mich., in 1916, showing the various types of insect -proof cages used 
in making inoculations. Photographed by W. W. Gilbert. B, Soil overwintering test at Madison, 
Wis., September 19, 1917. This land grew a mosaic crop in 1916. The few large healthy plants were 
grown under cages. All the uncaged plants became diseased early and were dead or severely stunted. 
An insect hibernation cage is seen at the left. 
