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 ...
BIOLOGISTS have understood for a long time past the importance of the study of the Protozoa as an indispensable aid to the solution of some of the most fundamental problems of biology. Of recent years ...
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