Beginners' zoology . Fig. 8i. — Crawfish(dorsal surface).. Fig. 82. crayfish without seeing its eyes. What are the advantagesand disadvantages of having the eyes on stalks ? Touch the body and the several appendages of thecrayfish. Where does it seem most sensitive to touch ?Which can reach farther, the antennae or the big claws?Why are short feelers needed as well as long ones ? Make a loud and sudden noise without jarring the cray-fish. Is it affected by sound? External Anatomy (Figs. 81, 82, 83, 84). — Is the body ofthe crayfish rounded out (convex) everywhere, or is anypart of its surface
Beginners' zoology . Fig. 8i. — Crawfish(dorsal surface).. Fig. 82. crayfish without seeing its eyes. What are the advantagesand disadvantages of having the eyes on stalks ? Touch the body and the several appendages of thecrayfish. Where does it seem most sensitive to touch ?Which can reach farther, the antennae or the big claws?Why are short feelers needed as well as long ones ? Make a loud and sudden noise without jarring the cray-fish. Is it affected by sound? External Anatomy (Figs. 81, 82, 83, 84). — Is the body ofthe crayfish rounded out (convex) everywhere, or is anypart of its surface either flat or rounded in (concave)? 54 BEGINNERS ZOOLOGY
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1921
