. The structure and development of crown gall : a plant cancer . Daisy XII. Longitudinal section of leaf-trace shown in Plate XLVIII, all abnormal except sp and scl (p. 38). Bui. 255, Bureau of Plant Industry, U. S. Dept. of Agriculture. Plate Daisy XII. Cross section showing abnormal Iignification of cell-walls in the tumor (p. 38). Bui. 255, Bureau of Plant Industry, U. S. Dept. of Agriculture. Plate LI.

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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1912