most excellent for averting the mal de mer. You breathe in—and out—slowly, so—turning the head from left to right and counting six between each breath."
I left him to his gymnastic endeavours, and went on deck.
As we came slowly into Boulogne Harbour Poirot appeared, neat and smiling, and announced to me in a whisper that Laverguier's system had succeeded "to a marvel!"
Japp's forefinger was still tracing imaginary routes on his map. "Nonsense! The car started from Boulogne—here they branched off. Now, my idea is that they transferred the Prime Minister to another car. See?"
"Well," said the tall detective, "I shall make for the seaports. Ten to one, they've smuggled him on board a ship."
Japp shook his head. "Too obvious. The order went out at once to close all the ports."
The day was just breaking as we landed. Major Norman touched Poirot on the arm. "There's a military car here waiting for you, sir."
"Thank you, monsieur. But, for the moment, I do not propose to leave Boulogne."
