The falls or rapids; Raudal of Maypures enclosed by four streams. Former state of the district. Island-like form of the rocks Keri and Oco. Grandeur of the view obtained on descending the hill of Manimi, where a foaming river-surface of four miles in extent presents itself at once to the eye. Iron-black masses of rock rise like castles from the bed of the river; the summits of the lofty palm trees pierce through the cloud of spray and vapour 219-226 Raudal of Atures; numerous islands; rocky dikes connecting one island with another, and the resort of pugnacious golden Pipras. Parts of the bed of the river at the cataracts are dry, from the waters having found a passage by subterranean channels. We visited the rocks at the closing in of night and during storm and heavy rain. Unsuspected proximity of crocodiles 226-227 Celebrated cave of Ataruipe, the sepulchral vault of an extinct nation 227-231 _Scientific Elucidations and Additions_--p. 233 to p. 255. The river-cow (Trichecus manati) lives in the sea at the place where, in the Gulf of Xagua, on the south coast of the Island of Cuba, springs of fresh water break forth 233-234 Geographical discussion on the sources of the Orinoco 236-241 The Bertholletia, a Lecythidea, a remarkable example of highly developed organization. Stem of an Arundinarea sixteen to seventeen feet long from knot to knot 241-243 On the myth or fable of the Lake of Parime 243-254 _The Nocturnal Life of Animals in the Primeval Forest_--p. 259 to p. 272. Difference between languages in respect to their richness in well-defined expressions for characterising natural phenomena, such as the state of vegetation, the forms of plants, the outlines and grouping of clouds, the appearance of the surface of the ground, and the forms of rocks and mountains. Loss which languages suffer by the disuse of such words, or by their signification becoming impaired. The misinterpretation of a Spanish word, “Monte,” has caused the undue extension or introduction of mountains in maps. Primeval Forest; frequent abuse of the term. Absence of the uniformity which is produced by the association of the same kinds of trees, characteristic of tropical forests. Causes of the impenetrability of forests between the tropics; the twining plants, Lianes, often form only a small portion of the Underwood 259-266 Appearance of the Rio Apure in the lower part of its course. Margin of the forest fenced like a garden by a low hedge of Sauso (Hermesia). The wild animals of the forest lead their young to the river through small openings in this hedge. Flocks of large water-hogs or Cavies (Capybara). Fresh-water dolphins 266-269 Wild cries of animals resound throughout the forest. Cause of the nocturnal uproar 269-271