both girls threw all their weight against it. 

 "We must find some instrument which will cut the threads of the web," said Ozma, finally. "Let us look about for such a tool." 

 So they wandered among the bushes and finally came to a shallow pool of water, formed by a small bubbling spring. Dorothy stooped to get a drink and discovered in the water a green crab, about as big as her hand. The crab had two big, sharp claws, and as soon as Dorothy saw them she had an idea that those claws could save them. 

 "Come out of the water," she called to the crab; "I want to talk to you." 

 Rather lazily the crab rose to the surface and caught hold of a bit of rock. With his head above the water he said in a cross voice: 

 "What do you want?" 

 "We want you to cut the web of the purple spiders with your claws, so we can get through it," answered Dorothy. "You can do that, can't you?" 

 "I suppose so," replied the crab. "But if I do what will you give me?" 

 "What do you wish?" Ozma inquired. 

 "I wish to be white, instead of green," said the crab. "Green crabs are very common, and white ones are rare; besides the purple spiders, which infest this hillside, are afraid of white crabs. Could you make me white if I should agree to cut the web for you?" 

 "Yes," said Ozma, "I can do that easily. And, so you may know I am speaking the truth, I will change your color now." 

 She waved her silver wand over the pool and the crab instantly became snow-white—all except his eyes, which remained black. The creature saw his reflection in the water and was so delighted that he at once climbed out of the pool and began moving slowly toward the web, by backing away from the pool. He moved so very slowly that Dorothy cried out impatiently: "Dear me, this will never do!" Caching the crab in her hands she ran with him to the web. 

 She had to hold him up even then, so he could reach with his claws strand after strand of the filmy purple web, which he was able to sever with one nip. 

 When enough of the web had been cut to allow them to pass, Dorothy ran back to the pool and placed the white crab in the water, after 

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