"Hurrah!" Johnnie Green shouted. And he dashed out of the woodshed and ran to the barnyard as fast as he could scamper.There was a good reason for his high spirits and his haste. His father had just told him he might have a lamb for a pet.Farmer Green followed Johnnie at a slower pace. When he reached the barnyard fence Johnnie was already on the other side of it, trying to catch a certain black lamb.Now, Johnnie Green was spry; but this black lamb was sprier. Whenever Johnnie thought he had the lamb the black rascal always managed to slip out of his clutches."I'll help you," said Farmer Green. And climbing the fence, he soon had the lively lamb cornered and caught.