Bui. 879, U. S. Dept. of Agriculture. 
Plate I 
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Mosaic on Young Cucumber Plants and a Badly Diseased Field. 
A, A single mosaic plant obtained from seed from mosaic plants in a test at Big Rapids, Mich., 1917: B, 
a young mosaic cucumber plant, showing the curling and savoyed effect on the smaller leaves; Big 
Rapids, Mich., 1916; C, a cucumber field at Holland, Mich., on August 19, 1915, showing severe stunting 
and loss to the late-planted cropdue to infection while the plants were small; the early planted portion 
in the background was not so badly affected. Photographed by W. W. Gilbert. 
