PROF. C. A. KOFOID delivered, on December 27 last in Boston, an address as vice-president of Section F (Zoology) of the American Association for the Advancement of Science and as president of the ...
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 ...
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