Note 2 — Chapter LXX

I assume here the identity of these two rivers, which, however, has not yet been fully demonstrated. Compare also the anomalous rising of the Chobé (Journ. Royal Geol. Soc., vol. xxii. p. 169.); although an isolated phenomenon, caused by an unusual and unequal fall of rain in the basin of the various branches of a great river-system, must not be confounded with a constant and regular course.