. Evenings at the microscope : or, Researches among the minuter organs and forms of animal life . Zoology; Microscopy; Microscopes. CRABS AND SHRIMPS. 185 shield, and, if long enough, is reflected over the front of the shield between the eyes. The dorsal spine is bent backwards and lies in contact with the dorsal shield; for the young, when it escapes from the egg, is quite soft, but it rapidly hardens and solidifies by the deposition of cal- careous matter in what may be called its skin. The pro- gress of this solidification may be very beautifully observed. SECOND STAGE OF SHOBE-CRAB. (Megal
. Evenings at the microscope : or, Researches among the minuter organs and forms of animal life . Zoology; Microscopy; Microscopes. CRABS AND SHRIMPS. 185 shield, and, if long enough, is reflected over the front of the shield between the eyes. The dorsal spine is bent backwards and lies in contact with the dorsal shield; for the young, when it escapes from the egg, is quite soft, but it rapidly hardens and solidifies by the deposition of cal- careous matter in what may be called its skin. The pro- gress of this solidification may be very beautifully observed. SECOND STAGE OF SHOBE-CRAB. (Megalopa.) by watching the circulation in the dorsal spine. When the creature has just effected its liberation from the egg, the blood-globules may be seen ascending to the apex; but as the consolidation advances, the circulation becomes more and more limited in its extent, and is finally con- fined to the base. These minute creatures, in this early state of their existence, are natatory and wonderfully active. They are continually swimming from one part of the vessel to the other ; and, when observed free in their. 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 Gosse, Philip Henry, 1810-1888. London : Society for Promoting Christian Knowledge
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