. Bulletin of the Department of Agriculture. Agriculture; Agriculture. Bui. 227, U. S. Dept. of Agriculture. Plate Toxicity Studies: Petri-Dish Cultures of Fomes annosus and Fomes FlGS 10 and 11.—F. annosus on dillcrent concentrations of coal-tar creosote, Fraction I, after 5 weeks: 10, on (5 per cent; 11, on per cent. Figs. 12 and 13.— F. pinicola on diflerenl concentrations of coal-tar creosote, Fraction II, after 51 -\ weeks: 12, On per cent; 13. on per cent. Figs. 14 to 19.—F. pinicola on different concentrations of coal tar cr te Fraction I\<, a
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. Bui. 227, U. S. Dept. of Agriculture. Plate Toxicity Studies: Petri-Dish Cultures of Fomes annosus and Fomes FlGS 10 and 11.—F. annosus on dillcrent concentrations of coal-tar creosote, Fraction I, after 5 weeks: 10, on (5 per cent; 11, on per cent. Figs. 12 and 13.— F. pinicola on diflerenl concentrations of coal-tar creosote, Fraction II, after 51 -\ weeks: 12, On per cent; 13. on per cent. Figs. 14 to 19.—F. pinicola on different concentrations of coal tar cr te Fraction I\<, after 9 weeks: 14, Check; 15, on per cent; lti. on percent; 17, on per cent; is. on per ccni; on per cent. Figs. 20 to 23.—F. annosus on diflerenl concentrations of coal-tar creosote, Fraction V, after 7 weeks: 20, Check: 21. on per ce 22, on per cent; 23, on 1 per cent. Fig. 24.—/'. pinicola on 1 per cent concentration oi CO tar creosote, Fraction V, after G 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, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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