. [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 Figs. 10 and 11.—F. annosus on different concentrations of coal-tar creosote, Fraction I, after 5 weeks: 10, on per cent; 11, on per cent. Figs. 12 and 13.—F. pinicola on different concentrations of coal-tar creosote, Fraction II, after 5|^ weeks: 12, On per cent; 13, on per cent. Figs. 14 to 19.—-P. pinicola on different concentrations 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 Figs. 10 and 11.—F. annosus on different concentrations of coal-tar creosote, Fraction I, after 5 weeks: 10, on per cent; 11, on per cent. Figs. 12 and 13.—F. pinicola on different concentrations of coal-tar creosote, Fraction II, after 5|^ weeks: 12, On per cent; 13, on per cent. Figs. 14 to 19.—-P. pinicola on different concentrations of coal tar creosote, Fraction IV, after 9 weeks: 14, Check; 15, on per cent; 16, on per cent; 17, on per cent; 18, on per cent; 19, on per cent. Figs. 20 to 23.—F. annosus on different concentrations of coal-tar creosote, Fraction V, after 7 weeks: 20, Check; 21, on per cent; 22, on per cent; 23, on 1 per cent. Fig. 24.—F. pinicola on 1 per cent concentration of coal- tar creosote, Fraction V, after 6 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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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1913
