. Bacteria in relation to soil fertility. Soil microbiology; Bacteriology, Agricultural. BACTERIA AND SOIL FERTILITY as a fish of prey darts through the sea; they were found every- where, although not in large numbers. A second kind was sim- ilar to that marked B (Fig. i) which sometimes spun around in a circle like a top. These were present in larger numbers and sometimes described a path like that shown in C to D (Fig. i.). A third kind could not be D F A <r—^ n distinguished so clearly; now they appeared oblong, now quite round. They were so very small that they did not seem larger than
. Bacteria in relation to soil fertility. Soil microbiology; Bacteriology, Agricultural. BACTERIA AND SOIL FERTILITY as a fish of prey darts through the sea; they were found every- where, although not in large numbers. A second kind was sim- ilar to that marked B (Fig. i) which sometimes spun around in a circle like a top. These were present in larger numbers and sometimes described a path like that shown in C to D (Fig. i.). A third kind could not be D F A <r—^ n distinguished so clearly; now they appeared oblong, now quite round. They were so very small that they did not seem larger than the bodies marked E, and besides they moved so rapidly that they were con- tinually running into one another. They looked like a swarm of gnats or flies dancing about together. I had the impression that I was looking at several thousand in a given part of water or saliva mixed with a particle from the teeth no larger than a grain of sand, even when only one part of the material was added to nine parts of water or saliva. Further, the greater part of the material consisted of an extraordinary number of rods, of widely different lengths but of the same diameter; some were curved, some straight as shown in F; they lay irregularly and were inter- laced. Since I have previously seen animalcules of this same kind in water, I endeavored to observe whether there was life in them, but in none did I see the smallest movement that might be taken as a sign of ; Some of them he considered traveled with the speed of lightning and even "tore through each ; This patient worker, supplied with a microscope of his own. Fig. i.^—The first drawings of bacteria by Leeuwenhoek. The dotted line "C-D" indicates movement of the 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 Greaves,
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbacteriologyagricult
