Volume 20, 1887
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The remainder of the evening was occupied by the examination, under microscopes lent by various members, of slides illustrating the propagation and reproduction of Algœ. The following objects were exhibited:—
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Penium margaritaceum, conjugation, with single smooth zygospore.
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Closterium acerosum, " "
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Closterium acertum, " with double smooth zygospore.
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Cosmarium stanmorense " with spiny globular zygospore.
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Spirogyra princeps, conjugation, with oval zygospores in the cells.
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Micrasterias denticulata, in process of division.
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Micrasterias ampullacea, "
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Draparnaldia glomerata, with spores emerging from the cells.
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Volvox globator, with “resting-spores” (V. stellatus, Ehr.).
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Rhodymenia (species), with sections of coccidia and spores.
