![Animal biology. Biology; Zoology; Physiology. 68 ANIMAL BIOLOGY is relatively slight. However, the Sponge dominates its tissues. Just so long as the component cells of the Sponge remain associated, they are Animal biology. Biology; Zoology; Physiology. 68 ANIMAL BIOLOGY is relatively slight. However, the Sponge dominates its tissues. Just so long as the component cells of the Sponge remain associated, they are](https://c8.alamy.com/comp/RN5N66/animal-biology-biology-zoology-physiology-68-animal-biology-is-relatively-slight-however-the-sponge-dominates-its-tissues-just-so-long-as-the-component-cells-of-the-sponge-remain-associated-they-are-not-to-be-regarded-as-individuals-but-as-specialized-centers-of-action-and-reaction-of-the-sponges-body-by-means-of-which-physiological-division-of-labor-is-made-possible-at-first-glance-indeed-one-would-not-recognize-a-sponge-as-an-animal-at-all-thus-the-common-leucosolenia-of-the-new-england-coast-appears-to-be-a-group-of-tiny-tubes-or-sacs-per-osculum-please-note-that-these-RN5N66.jpg)
Animal biology. Biology; Zoology; Physiology. 68 ANIMAL BIOLOGY is relatively slight. However, the Sponge dominates its tissues. Just so long as the component cells of the Sponge remain associated, they are
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Fig. 36—Necrotic Tips of Fetal Sacs, Swine, /, /a, Necrotic embrj^os in totally necrosed fetal sacs ; 2, 2, normal embryos within amnion, the allantois having been opened ; 4, necrotic
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