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On Extreme and Exceptionals Variations of Diatoms, in Some White Mountain Localities, &c.

P. W. Lewis
Proceedings of the Academy of Natural Sciences of Philadelphia
Vol. 17, No. 1 (Jan. - Mar., 1865), pp. 7-18
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Page Count: 14
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Notes and References

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  • *
    N. affinis, N. rhomboides ranges from the smallest apiculate, up to the magnificent var. b. (pl. ii., fig. 11)