"Yes; it is Benares metal-work."
"And so heavy!" she exclaimed, trying to raise it. "The box alone must be of some value. Where is the key?"
"Small threw it into the Thames," I answered. "I must borrow Mrs. Forrester's poker." There was in the front a thick and broad hasp, wrought in the image of a sitting Buddha. Under this I thrust the end of the poker and twisted it outward as a lever. The hasp sprang open with a loud snap. With trembling fingers I flung back the lid. We both stood gazing in astonishment. The box was empty!
No wonder that it was heavy. The iron-work was two-thirds of an inch thick all round. It was massive, well made, and solid, like a chest constructed to carry things of great price, but not one shred or crumb of metal or jewelry lay within it. It was absolutely and completely empty.
"The treasure is lost," said Miss Morstan, calmly.
As I listened to the words and realized what they meant, a great shadow seemed to pass from my soul. I did not know how this Agra treasure had weighed me down, until now that it was finally removed. It was selfish, no doubt, disloyal, wrong, but I could realize nothing save that the golden barrier was gone from between us. "Thank God!" I ejaculated from my very heart.
She looked at me with a quick, questioning smile. "Why do you say that?" she asked.
"Because you are within my reach again," I said, taking her hand. She did not withdraw it. "Because I love you, Mary, as truly as ever a man loved a woman. Because this treasure, these riches, sealed my lips. Now that they are gone I can tell you how I love you. That is why I said, 'Thank God.'"
"Then I say, 'Thank God,' too," she whispered, as I drew her to my side. Whoever had lost a treasure, I knew that night that I had gained one.