CLIMBING PLANTS. 133 



namely, leaf-climbers and tendril-bearers taken 

 together, far exceed in number and in the perfec- 

 tion of their mechanism, the climbers of the two 

 first classes. Those which have the power of 

 spontaneously revolving and of grasping objects 

 with which they come in contact, easily pass from 

 branch to branch, and securely ramble over a 

 wide, sunlit surface." l 



1 " Climbing Plants," p. 189. 



