328 SUMMARY OF THE CONTENTS OP VOL. II. 



frequently their small size, also contribute to lessen their general 

 effect on the landscape 1316 



Enumeration of the forms of plants which principally determine the 

 physiognomy of Nature, and which decrease or increase from the 

 equator to the poles according to laws which have been made the 

 subject of investigation 17 20 



Palms 20, 21, 126140 



Plantains or Bananas 21, 22, 140, 141 



Malvaceae 22, 141143 



Mimosae 22, 23, 143145 



Ericee, or Heath form 23, 24, 145147 



Cactus form 24, 147151 



Orchideaj. 24, 25, 151, 152 



Casuarineae .25, 152, 153 



Needle trees . . . . . . . .25, 153-175 



PothosandAroidese.- . . ..." . . .26,175178 



Lianes, or twining rope plants . . . . .26, 178 180 



Aloe form . . . 27,380183 



Graminege ... . '. . . . .27, 28, 18B-187 

 Eerns ......... 28,188193 



Liliacese 28, 193 



Willow form . 28, 193196 



Myrtacese 28, 196200 



Melastomaceae 28, 200 



Laurel form 28, 200 



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



