. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. PLATE Fig. 1. — Canker resulting from coalescence of a number of small ones from stomatal infections. Fig. 2. — Five cankers on a single Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Massachusetts Agricultural Experiment Station. Amherst, : Massachusetts Agricultural Experiment Station, 1907-1974

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