OCR Text |
Show 472 INDEX. difference, 30, 109; the southern hemisphere cooler anJ. moister than the northern, 121. Climatic effects of extensive forests, 112. Ccelebogyne, produces perfect seeds without any trace of pollen having been discovered, 260. Condor.-Discussion 'of the height in the atmosphere to which the condor ascends, 252. Coniferre, or needle-trees, 242, 330. Coral reefs, classified by Darwin, 268; his hypothesis of the origin and growth of coral reefs, 277. Correo que nada, the "swimming post" in the upper waters of the Amazons river, 420. Curare, plant from which the poison is obtained, 165. Current.-Great revolving current of the Atlantic Ocean discussed, 134. Dogs.-European dogs have become wild in South America, and live in troops in the Pampas, 98; native P eruvian dogs, 99; Tschudi's remarks on the indigenous races of dogs in America, 101. Dragon-tree of Orotava, 236, 283. Esquimaux, instances recorded of their having been carried across the Atlantic to the shores of Europe, 136. Ferns, 244, 354. Figured rocks, i. e. figures engraven on rocks in an extensive district of South America, 160. Fresh water springs in the ocean near Cuba, 187. Fournel, recent contributions to the physical geography of Northern Africa, 104. Fremont, Captain, importance of his geographical memoirs on our knowledge of the geography of North America, 50; and generally in Note (6 ), also 219. Geographical distribution of plants, laws of the, 295. Gob1, the plateau of, 75, 78. Graminere, 243, 351. Guaranis, a tribe inhabiting the seacoast and rivers near the mouth of the Orinoco, 147. Granite, leaden-colored rocks of, in the Orinoco, 154. Great basin, the elevated plain so called, between the Rocky Mountains and the Sierra Nevada of California, 55 ; forms an inland closed river basin, 219. Gymnotus, description of its capture in South America by means of horses, 39. Heat in plants developed during inflorescence, 346. Heaths, 240, 324. Himalaya, one of tho four parallel mountain chains of Central Asia, 88. Hiongnu, 94. Hooker, Dr. J., recent determination of the elevation of the Kinchin- |