(16/4.

"Edinburgh Philosophical Journal" January 1830 page 74 and April 1830 page 258.

Also Daubeny on Volcanoes page 438 and "Bengal Journal" volume 7 page 324.) One person with whom I conversed had himself heard the noise: he described it as very surprising; and he distinctly stated that, although he could not understand how it was caused, yet it was necessary to set the sand rolling down the acclivity.

A horse walking over dry and coarse sand causes a peculiar chirping noise from the friction of the particles; a circumstance which I several times noticed on the coast of Brazil.
Three days afterwards I heard of the "Beagle's" arrival at the Port, distant eighteen leagues from the town.

There is very little land cultivated down the valley; its wide expanse supports a wretched wiry grass, which even the donkeys can hardly eat.