. [Bulletins on forest pathology : from Bulletin , Washington, , 1913-1925]. Trees; Plant diseases. Bui. 227, U. S. Dept. of Agriculture. Plate Toxicity Studies: Petri-Dish Cultures of Fomes annosus and Fomes pinicola.— II. Figs. 25 and 26.—F. pinicola on different concentrations of United Gas Improvement Co. oil, No. 1101, after about 5 weeks: 25, On 20 per cent; 26, on 40 per cent. Figs. 27 and28.— F. anno- sus on different concentrations of water-gas tar distillate (sp. gr. at 60° C), after 6 weeks: 27,On per cent; 28, on per cent. Fig. 29.— F. annosus o
. [Bulletins on forest pathology : from Bulletin , Washington, , 1913-1925]. Trees; Plant diseases. Bui. 227, U. S. Dept. of Agriculture. Plate Toxicity Studies: Petri-Dish Cultures of Fomes annosus and Fomes pinicola.— II. Figs. 25 and 26.—F. pinicola on different concentrations of United Gas Improvement Co. oil, No. 1101, after about 5 weeks: 25, On 20 per cent; 26, on 40 per cent. Figs. 27 and28.— F. anno- sus on different concentrations of water-gas tar distillate (sp. gr. at 60° C), after 6 weeks: 27,On per cent; 28, on per cent. Fig. 29.— F. annosus on per cent concentration of S. P. F. carbolineum after about 6 weeks. Fig. 30.—F. annosus on per cent concentration of coal-tar creosote, Fraction III, after 6 weeks. Figs. 31 to 35.—F. pinicola on different con- centrations of wood creosote (Douglas fir) after about 2V2 weeks: 31, Check; 32, on per cent; 33, on per cent; 34, on per cent; 35, on per cent. Figs. 36 and 37.—F. annosus on different concentrations of wood creosote (Douglas fir) after about 4 weeks: 36, On per cent; 37, on per cent. Figs. 38 and 39.—F. annosus on different concentrations of cresol calcium after about 6 weeks: 38, On per cent; 39, on per 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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