. Fig. 9A. Eoot rot caused by Bhizoctonia. To the right the soil was inoculated with the fungus, resulting in no germination. At the left the soil was free from the fungus, resulting in good germination. already pointed out by Shaw the macrosclerotia produce the Corticium stage: the sweet pea organism is therefore referred to as Corticium vagum B. and C. Pathological Conditions of the Host. The Rhizoctonia fungus when attacking other hosts, is known to be confined primarily to the cambium layer of the plant. With the sweet pea, conditions are sim-

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsweetpeas, bookyear19