The dullest man present could see that the captain's reply was unanswerable.

In sheer despair, Crayford took Frank's arm and led him aside a few steps.

The last chance left of parting the two men was the chance of appealing to Frank.
"My dear boy," he began, "I want to say one friendly word to you on the subject of your health.

I have already, if you remember, expressed my doubts whether you are strong enough to make one of an exploring party.
I feel those doubts more strongly than ever at this moment.

Will you take the advice of a friend who wishes you well ?" Wardour had followed Crayford.