The men also land the various sections of Roch's engines which are discoid in shape.
The inventor watches their operations, and his eyes glisten with eagerness.

He seizes one of the sections, examines it, and nods approval.

I notice that his joy no longer finds expression in incoherent utterances, that he is completely transformed from what he was while a patient at Healthful House.

So much is this the case that I begin to ask myself whether his madness which was asserted to be incurable, has not been radically cured.
At last Thomas Roch embarks in the boat used for crossing the lake and is rowed over to his laboratory.

Engineer Serko accompanies him.