. Annales de micrographie. — 84? — protoplasme contenu dans le frustule acquiert un volume considérable, rejette les deux valves cjdindriques en avant et en arrière, parfois suivant une ligne droite axiale, le plus souvent angulairement (Voir fig. A).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Paris

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Keywords: ., bookcentury1800, bookcollecti, bookdecade1890, bookpublisherparis