. Science of the sea. An elementary handbook of practical oceanography for travellers, sailors, and yachtsmen. Fig. 78.—Globigerina (from a Living Specimen) (Challenger). The central dark mass is the shell (compare Fig. 162, p. 222), from whichradiate stiff spines of lime. Round the shell is a bubbly mass of livingmatter, from which fine granular threads extend between the spines,generally straight, but some curved. i66 THE FLOATING ANIMALS. Fig. 79.—Eucyrtidium. (From Lankesters Zoology,by permission of messrs. black.)

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectocean, bookyear1912