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 northeast. "There, look at that! Take hold of it for yourself."

McCoy and the mate tried it, and felt the line thrumming and vibrating savagely to the grip of the tidal stream.

"A four-knot current," said Mr. Konig.

"An easterly current instead of a westerly," said Captain "Davenport, glaring accusingly at McCoy, as if to cast the blame for it upon him.

"That is one of the reasons, Captain, for insurance being eighteen per cent in these waters," McCoy answered cheerfully. "You can never tell. The currents are always changing. There was a man who wrote books, I forget his name, in the yacht Casco. He missed Takaroa by thirty miles and fetched Tikei, all because of the shifting currents. You are up to windward now, and you'd better keep off a few points."

"But how much has this current set me?" the captain demanded irately. "How am I to know how much to keep off?"