462 SUMMARY OF THE CONTENTS. 



Lianes, or twining rope plants iv : '- " ** '" . 242 243, 347 349 



Aloe form '.''.' 243, 349351 



Graminese -V^'Sr*** -Jtr ^*t*^&'^> *> ;*- 243244, 351354 

 Ferns J." ' ' ', ." ',!.--. '.-',' ' * -* 244,354357 



Liliacese . .:^ ?^~ - ' *. ' 244,357358 

 Willow form . .* V ';V", - - ^^-:\ 244,358360 

 Myrtacese <," '^.Vv '* ' .< W 244,360362 

 Melastomacese ' r v > .:'*; -V : ; .-. "%' 244,362363 

 Laurelfbrm . . . ...^' V ^ ,*."',. ^ : <5 : .|- ;^ 244, 363 



Enjoyment derived from the sight of the natural grouping and con- 

 trasts of these forms of plants. Importance of the physiognomic 

 study of plants to the landscape painter . 244246, 363369 



Scientific Elueidations and Additions p. 227 to p. 371. 

 Organic forms, animal and vegetable, in the highest mountain regions 

 adjacent to the limit of perpetual snow in the Andes and the Alps ; 

 insects carried up involuntarily by ascending currents of air. The 

 Hypudseus nivalis of the Swiss Alps. On the true elevation above 

 the sea reached by the Chinchilla laniger in Chili . 247 248 



Lecidias and Parmelias on rocks not entirely covered with snow ; 

 some phsenoganious plants also wander in the Cordilleras beyond 

 the limits of perpetual snow, as the Saxifraga boussingaulti, to 

 15,770 English feet above the level of the sea. Groups of phseno- 

 gamous plants extend in the Andes to 13,700 and 14,920 English 

 feet above the sea; species of Culcitium, Espeletia, and Kanunculus ; 

 small umbelliferous plants resembling mosses in appearance; 

 Myrrhis andicola and Fragosa arctioides >!./'*''> <248 249 



Measurement of the height of Chimborazo, and etymology of the 

 name . . . . . . . . . 249291 



On the greatest absolute heights which have yet been reached by any 

 human beings in either Continent; in the Cordilleras and the 

 Himalaya, on the Chimborazo and the Tarhigang . 251 252 



Habits and haunts of the Condor (Cuntur, in the Inca language), and 

 singular mode of capturing these powerful birds in an enclosure 

 fenced by palisades .... .252255 



Useful services rendered by the Gallinazos (Cathartes urubu and C. 

 aura) in purifying the air in the neighborhood of human habita- 

 tions ; these birds sometimes tamed . . . . 255 



On what has been called the revivification of Rotiferse; views of 

 Ehrenberg and Doyere. According to Payen, germs of Crypto- 



