Consummate politeness is not the right tonic for an emotional collapse.

They must have had, both of them, a fairly painful time of it in the cabin of the brig.

In the end Morrison, casting desperately for an idea in the blackness of his despondency, hit upon the notion of inviting Heyst to travel with him in his brig and have a share in his trading ventures up to the amount of his loan.
It is characteristic of Heyst's unattached, floating existence that he was in a position to accept this proposal.

There is no reason to think that he wanted particularly just then to go poking aboard the brig into all the holes and corners of the Archipelago where Morrison picked up most of his trade.

Far from it; but he would have consented to almost any arrangement in order to put an end to the harrowing scene in the cabin.