. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. 36 Some attempts have been made to sculpture the surface of the cement to imitate the bark, but this is objectionable from many points of view. The cost of filling or tinning trees need not be excessive nor be- yond the reach of most individuals or towns. Considerable experi- menting and careful observations, however, must be made in order. Fig. i6. Showing cavity in valuable yellow oak being pre- pared for filling. to ascertain the best method of treating cavities. Most of the clean- ing of the cavities
. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. 36 Some attempts have been made to sculpture the surface of the cement to imitate the bark, but this is objectionable from many points of view. The cost of filling or tinning trees need not be excessive nor be- yond the reach of most individuals or towns. Considerable experi- menting and careful observations, however, must be made in order. Fig. i6. Showing cavity in valuable yellow oak being pre- pared for filling. to ascertain the best method of treating cavities. Most of the clean- ing of the cavities at the present time is done with mallets, chisels and other tools, but a rotary cutter driven at high speed by a gaso- line engine or other power would greatly facilitate this work, and we are now experimenting with such a 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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