Excerpt..

We were both of us not a little stiff as the result of sleeping out in the open all that night, for even in Grand Canary the dew-fall and the comparative chill of darkness are not to be trifled with. For myself on these occasions I like a bit of a run as an early refresher. But here on this rough ground in the middle of the island there were not three yards of level to be found, and so as Coppinger proceeded to go through some sort of dumb-bell exercises with a couple of lumps of bristly lava, I followed his example. Coppinger has done a good deal of roughing it in his time, but being a doctor of medicine amongst other things—he takes out a new degree of some sort on an average every other year—he is great on health theories, and practises them like a religion.