Field studies on the dissemination and growth of the chestnut blight fungus [microform] . Inoculation at the base of broken twigs. ? * ?? ^ A- . H fl ? ^ ?^???^Ih^ »--* Artificial wind inoculation with bellows. p^x. .j^i \^xg^^^Mu-^~ O^B^^^^^^^H maSsM • •SV^^^ i^^ j ^^H^^l W «^»va f ^MHj ? 1 ^^ ? - ^-Af .y^^K^ h HBB^?^~ R*- j Testing the carrying power of the wind. Sterile plates exposed on tripod atthe right. Active perithecia on the upright logs at the left. Wind blow-ing from the logs toward the

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Keywords: ., bookauthorpennsylv, bookcentury1900, bookdecade1910, bookyear1913