Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 870
ion of the Cidarid spine is con-tested by Professor Jeffrey Bell, who has brought forward 1 evidenceto show that if two spines of different sizes be taken from twoexamples of Cidaris metularia, also differing in size, the quantity ofsolid calcareous sheath seen in transverse section is… … Fig. 619.—Spine of Spatangus. of Spatangus (fig. 619) and the innumerable minute hair-like pro-cesses attached to the shell of Clypeaster are composed of the likeregularly reticulated substance 2; and these are very beautiful objectsfor the lower powers of the microscope, when laid upon a…
Microscopy
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