The royal natural history . shells of Globigerina (much magnified). 55§ THE LOWEST ANIMALS. ooze, live at the bottom as well as at the surface, has given rise to much discus-sion. Dr. Murray has come to the conclusion that pelagic species do not live near. Polystomella (magnified 200 diameters). the ocean floor. His opinion is partly based on the fact that the area of Glob-igerina ooze coincides with the area of surface temperature at which Globigerinas SUN-ANIMAL CULES. 559

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Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectzoology