The detective took one from his trunk.
Van Ingen turned the leaves, looked long and earnestly at something he saw, closed the book, and turned a little white, but his eyes were blazing.
"I have found 'Lolo,'" he said simply.
He took up his pencil and quickly sketched the diagram:
"Look," he said, and added a few letters:
"Longitude, nought; latitude nought—L. o, L. o!" whispered the detective. "You've hit it, Van Ingen! By Jove! Why, that is off the African coast." He looked again at the map.