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621. Henisley, W. B. Report on the Botany of Juan 

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Twenty-six species from Juan Fernandez. 



622. H(erriek), E. C. Ancient Meteorological Notices. Am* 

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Notice of Red Snow near Boston in 1688. 



623. Hervey, A. B. The Classification of the Algae. Am. 

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624. , Sea Mosses: A Collector's Guide and an Intro- 

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625. . Arthrocladia villosa Daby. Bull. Torr. Bot. 



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626. . Translation of Behren's "Work with Additions 



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627. . Marine Algae. Bot. Gaz. 11:147, 148. 



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Directions for collecting. 



628. Hess, R. J. Report of the Biological and Microscopical 

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Diatoms from Mobile Bay from Dr. Hall, Feb. 18, 1889. 



629. Heiirck, H. van. Recherche des Diatomees. Le Mi- 

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Six species noted. 



632. Hilgard, T. C. Synopsis of a New Classification of 

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633. . Infusorial Circuit of Generations. Am. Jour. 



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634. . The Fresh Water Algae as the Spawns of 



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