Ohio Journal of Science: Volume 65, Issue 5 (September, 1965)

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Front Matter
pp 0
Article description | Article Full Text PDF (828KB)

Middle Devonian Brachiopods of Southeastern Wisconsin
Griesemer, Allan David pp 241-295
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An Observation on the Protoplasmic Connections Through Sieve Plates
Giesy, Robert M.; Geiger, Donald R. pp 295-297
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The Conjugal Behavior of the Introduced European Giant Garden Slug, Limax Maximus L., as Observed on South Bass Island, Lake Erie
Langlois, Thomas H. pp 298-304
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Book Notices
pp 304-304
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Back Matter
pp 999
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    Back Matter
    (1965-09)
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    Book Notices
    (1965-09)
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    The Conjugal Behavior of the Introduced European Giant Garden Slug, Limax Maximus L., as Observed on South Bass Island, Lake Erie
    (1965-09) Langlois, Thomas H.
    A pair of giant garden slugs, though permaphrodies hermaphrodites, behave as if one were male and one were female during the period just preceding, during, and after mating. A description of this behavior, with photographs, is presented, and the possibility of protandrism is suggested.
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    An Observation on the Protoplasmic Connections Through Sieve Plates
    (1965-09) Giesy, Robert M.; Geiger, Donald R.
    wo electron micrographs of paradermal sections of veins of the leaves of Beta vulgaris are presented. The micrographs show the endoplasmic reticulum from one sieve cell passing through the sieve plate and into the adjacent sieve cell. This is evidently an unusual condition in this material
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    Middle Devonian Brachiopods of Southeastern Wisconsin
    (1965-09) Griesemer, Allan David
    Twenty-nine genera, forty-eight species, and five subspecies of brachiopods are recognized from the Middle Devonian formations of southeastern Wisconsin. Two species and four subspecies are new. The presence of Trigonoglossa truncata in the Wisconsin section seems to substantiate the extension of the range of this Pennsylvanian genus into the Middle Devonian as suggested by Girty, and the existence of well-preserved Lingulidiscina in the Milwaukee Formation supports the validity of this genus, previously questioned by Girty. Correlation of the Lake Church formation is obscure because of incomplete collections from localities now inaccessible. However, distinctive Milwaukee Formation species show affinities with Upper Middle Devonian Cedar Valley brachiopods of Iowa, indicating the possibility of a connection between these areas during late Hamilton time.
  • Item
    Front Matter
    (1965-09)