Those who have observed with a little attention a rugged coast will, without being geologists, recognise the distinctly marine character of the greater number of these orifices in the calcareous district of the causses.

"These words, followed by a glorious burst of shrill sounds, 'long drawn out,' are hailed with a murmur of delight by many a hungry tar and many a jolly marine.

Although starfish are common enough in the Andes and a seahorse has actually found its resting-place in La Paz, this does not alter the fact that scientific investigators have never found any strictly marine fauna in Lake Titicaca.