Lemon Meringue Pie III

INGREDIENTS

• 1 (9 inch) pie crust, baked
• 1 1/2 cups white sugar
• 1/2 teaspoon salt
• 1 1/2 cups water
• 1/2 cup cornstarch
• 1/3 cup water
• 4 eggs, separated
• 1/2 cup lemon juice
• 2 teaspoons lemon zest
• 3 tablespoons butter
• 1/4 teaspoon salt
• 1/2 cup white sugar