Report of the Commissioner from 1889 to 1891 . Report U. S. F. C. 1889 to 1891. (To face p. 564.) Plate STUDIES: A COMPARATIVE INVESTIGATIONOF THE IMPORTANCE AND CONSTITUTION OF THE PELAGICFAUNA AND FLORA. By Ernst [Translated by George Wilton Field.] TRANSLATORS PREFACE. Prof. Haeckels Plankton -Studies first appeared in the JenaischeZeitsehrifty vol. XXV, first and second parts, 1890. It was immediatelypublished in separate form by Gustav Fischer, of Jena, and attractedmuch attention on the Continent and in England. The subject, u acomparative study of the importan
Report of the Commissioner from 1889 to 1891 . Report U. S. F. C. 1889 to 1891. (To face p. 564.) Plate STUDIES: A COMPARATIVE INVESTIGATIONOF THE IMPORTANCE AND CONSTITUTION OF THE PELAGICFAUNA AND FLORA. By Ernst [Translated by George Wilton Field.] TRANSLATORS PREFACE. Prof. Haeckels Plankton -Studies first appeared in the JenaischeZeitsehrifty vol. XXV, first and second parts, 1890. It was immediatelypublished in separate form by Gustav Fischer, of Jena, and attractedmuch attention on the Continent and in England. The subject, u acomparative study of the importance and constitution of the marinefauna and flora, is presented in Prof. HaeckeFs usual pleasing style,and the work can not fail to be of value to all interested in the bio-logical sciences, to the general reader as well as to the specialist. Itderives especial interest in connection with the work of the Fish Com-mission, from its broad discussion of those many important elementswhich enter into the food supply of all pelagic fishes, such as themackerel and menhaden, and, considering the extensive physic
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