'Why didn't you follow the cab?'
'I didn't know which to follow, sir, and the cab was gone instantly while I watched the American.'
'What was its number?'
'I don't know, sir.'
'You clod! Why didn't you call one of our men, whoever was nearest, and leave him to shadow the American while you followed the cab?'
'I did shout to the nearest man, sir, but he said you told him to stay there and watch the English lord, and even before he had spoken both American and cabman were out of sight.'
'Was the man to whom he gave the box an American also?'
'No, sir, he was French.'
'How do you know?'
'By his appearance and the words he spoke.'