Abstract
Up to the present, so far as I am aware, the only method of demonstrating the presence of Protozoa in soils has been by cultures. This method, of course, leaves untouched the really important question as to what Protozoa are leading a trophic existence at any given time in a soil sample, since many of the forms found later on in cultures may be derived from cysts. In these circumstances I thought it might be of interest to direct attention to a method by which the presence of Protozoa in the trophic stage in the soils can be readily demonstrated, even though this method from a quantitative point of view probably gives low results.
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MARTIN, C. The Presence of Protozoa in Soils. Nature 91, 111 (1913). https://doi.org/10.1038/091111b0
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DOI: https://doi.org/10.1038/091111b0
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