. [Bulletins on forest pathology : from Bulletin , Washington, , 1913-1925]. Trees; Plant diseases. Bui. 227, U. S. Dept. of Agriculture - 40 ' ~ Plate Toxicity Studies: Petri-Dish Cultures of Fomes annosus and Fomes pinicola.— III. Figs. 40 to 45.—F. pinicola on different concentrations of wood tar (hardwood) after 2 weeks: 40, Check; 41, on per cent; 42, on per cent; 43, on per cent; 44, on per cent; 45, on per cent. Figs. 46 to 48.—F. annosus on different concentrations of wood tar (hardwood) after about 3 weeks: 46, On per cent; 47, on per cent;

---

. [Bulletins on forest pathology : from Bulletin , Washington, , 1913-1925]. Trees; Plant diseases. Bui. 227, U. S. Dept. of Agriculture - 40 ' ~ Plate Toxicity Studies: Petri-Dish Cultures of Fomes annosus and Fomes pinicola.— III. Figs. 40 to 45.—F. pinicola on different concentrations of wood tar (hardwood) after 2 weeks: 40, Check; 41, on per cent; 42, on per cent; 43, on per cent; 44, on per cent; 45, on per cent. Figs. 46 to 48.—F. annosus on different concentrations of wood tar (hardwood) after about 3 weeks: 46, On per cent; 47, on per cent; 48, check. Figs. 49 to 51.—.F. annosus on different concentrations of copperized oil: 49, On per cent after about 3 weeks: 50, on per cent after about 3 weeks; 51, on 36 per cent after about hY2 weeks. Fig. 52.— F. pinicola on 50 per cent concentration of None-Such Special after about 314weeks. Figs. £3 and 54.—F. pinicola on different concentrations of zinc chlorid (commercial) after 4 weeks: 53, On per cent; 54, 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]

---

Size: 1318px × 1895px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1913