. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). An injury resulting from this kind of fractures leaves a long and slivered end some distance from tlie point where healing takes place. It must be a number of years then l)efore the healing process can advance so far as to cover tlie fracture. In this instance over thirty years elapsed. The broken and slivered end of the sapling offered the most favorable lodgment place for spores of fungi, and for the accumulation of detritis resulting from tlie constan
. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). An injury resulting from this kind of fractures leaves a long and slivered end some distance from tlie point where healing takes place. It must be a number of years then l)efore the healing process can advance so far as to cover tlie fracture. In this instance over thirty years elapsed. The broken and slivered end of the sapling offered the most favorable lodgment place for spores of fungi, and for the accumulation of detritis resulting from tlie constant weatherino; of the exposed surface. In these places moisture is also con- served. The conditions presented are favorable for the germination of the spores and entrance of the mycelial threads. Is o moro favoral)le infection court could be provided whereby the fungus i^ enabled to enter the heart wood. From this point of in- f e c t i o n the mycelium spreads both ways down the old trunk of the sap- ling, and upward in the branch whi^-h forms the newl V estal)li8hed leader. The |)r()gress of the fun- ii; u s is con]i)arativelv slow, and the disorgani- zation of tlie wood ac- companies it. The slow o-rowth of the mvcelium is probably due to several causes, the resistance which it meets from the wood, the action of tannic acids in the heart wood, as well as to the 69. — Section of oak sfiowing dead scvpUng stage near 70.— Section of oak showing slivered end of broken 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 Cornell University. Agricultural Experiment Station. Ithaca, N. Y. : The University
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