. [Bulletins on forest pathology : from Bulletin , Washington, , 1913-1925]. Trees; Plant diseases. 46 BULLETIN 1037, U. S. DEPARTMENT OF AGRICULTURE. SUMMARY OF OBSERVATIONS. Creosote dipping seemed to prevent sap-staining, but it had little effect upon mold. In no way did it detract from the sale value of the spokes. The creosote bath at 80° to 90° F. was nearly as effective as at 150° to 155° F. Mercuric chlorid, 1 per cent, seemed to be very effective in con- trolling both sap-. stain and mold. Borax solution, 5 per cent, appeared to be somewhat ef- fective in control- ling mol
. [Bulletins on forest pathology : from Bulletin , Washington, , 1913-1925]. Trees; Plant diseases. 46 BULLETIN 1037, U. S. DEPARTMENT OF AGRICULTURE. SUMMARY OF OBSERVATIONS. Creosote dipping seemed to prevent sap-staining, but it had little effect upon mold. In no way did it detract from the sale value of the spokes. The creosote bath at 80° to 90° F. was nearly as effective as at 150° to 155° F. Mercuric chlorid, 1 per cent, seemed to be very effective in con- trolling both sap-. stain and mold. Borax solution, 5 per cent, appeared to be somewhat ef- fective in control- ling mold, but of less value in regard to sap-stain. The use of lime in the treatment of spokes was not satis- factory, on account of its darkening ef- fect on the wood, the covering up of phys- ical defects, and the probability of dull- ing the knives used in later processes of manufacture. Salt sprinkled over the spokes was of no value in preventing either mold or sap- stain. The ventilation of spokes in a box car is an important factor. Those spokes in the doorway, even if untreated, usually have but little tendency to mold or sap-stain. Practically none of the spokes in either car were culled on account of defects due to fungi, although a few in the areaway between the doors were thrown out on account of slight checking. No incipient decay was found in any of the material. Fig. 20.—Green turned spokes cross piled in open or venti- lated sheds. Green spokes are sometimes allowed to surface dry in this manner for one to two months pre- paratory to shipping in hox 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 United States. Dept. of Agriculture. [Washington : U. S. Dept. of Agriculture]
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