It was stiff and crackly.
"Parchment--parchment," whispered Captain Obed.

"The map is drawed on parchment--that's sheepskin instead of paper.

He wanted it to last for years and years." "Who did ?" Once more Captain Obed looked around to see if by chance any one had stolen into the room.

He made Bob rather nervous.
"Captain Kidd," he answered in a lower whisper than he had yet used.
"Captain Kidd drawed that map.

It gives the real secret of his buried treasure.