A LIMB FOR A LIFE 



cucumbers there is an extraordinary prevalence of 

 the surrender of parts. A starfish may jerk off 

 each of its five arms seized in succession ; it may 

 cast off an injured arm ; in rare cases there is 

 multiplication by division. Sea-cucumbers discharge 

 their insides in the spasms of capture and may 

 thus escape from an astonished foe. The replace- 



THE SHORE-CRAB THROWING OFF A DAMAGED GREAT CLAW. 



ment of the food-canal is sometimes accomplished 

 in ten days, though it may take as many weeks. 

 The heart-urchin often gives off its snapping spines 

 when they nip the skin of some molester. 



One often sees among the stubble very interesting 

 somewhat spider-like creatures called harvestmen 

 (Phalangidse), which move swiftly (in the evening 



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