. A laboratory manual of soil bacteriology. Soil microbiology. 62 SOIL BACTERIOLOGY 6. Shake vigorously, and transfer i to a second blank, and so on to a third. 7. From the third dilution pour plates, using i for each. It is frequently difficult to separate Azotobacter from a small organism known as Bacillus w g" •m *# ^ i Fig. 3.—Azotobacter stained with methylene-blue; X 1200. Exercise 28 Nitrogen Fixation in Soil I. Weigh two 500-gram portions of field soil into soup Please note that these images are extracted from scanned page images that may
. A laboratory manual of soil bacteriology. Soil microbiology. 62 SOIL BACTERIOLOGY 6. Shake vigorously, and transfer i to a second blank, and so on to a third. 7. From the third dilution pour plates, using i for each. It is frequently difficult to separate Azotobacter from a small organism known as Bacillus w g" •m *# ^ i Fig. 3.—Azotobacter stained with methylene-blue; X 1200. Exercise 28 Nitrogen Fixation in Soil I. Weigh two 500-gram portions of field soil into soup 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 Fred, Edwin Broun, 1887-1981. Philadelphia, London, W. B. Saunders Company
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