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'96. A Report upon the Protozoa observed in Lake Michigan and 



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'90. Three New Rotifers. The Microscope, Vol. X.. pp. 143-145. 3 fig. 



Plate, Ludwig. 

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'93. On a Method of Preserving Rotatoria. Ibid., Ser. U.. Vol. V., 



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 '95. Second Note on a Method of Preserving Rotatoria. Ibid., 



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Schewiakoff, Wl. 

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'94. IJst of the Protozoa -and ]Mollusca observed in I^ake St. Clair in 

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