On what discoveries does chapter two end?

When Kino comes up for air, Juana can sense his excitement. Kino opens the various oysters he had caught, leaving the largest one for last. He worries that the large pearl he saw was merely a reflection, for "in this Gulf of uncertain light there were more illusions than realities." Finally, Kino opens the oyster to see a rich, perfectly curved pearl. Juana lifts the poultice of seaweed from Coyotito to see that the swelling has begun to recede. Kino puts back his head and howls, causing the men in other canoes to look up and race toward Kino's canoe.