PROPAGATION BY LAYERS AND RUNNERS 79 



gootee; from its bottom the cord is taken out and wound 

 around the ball. By this practice, air-layering may be suc- 

 cessful even in the open. The roots penetrate the earthen 

 ball, and the plant is easily transplanted to permanent 

 quarters. 



The amateur plant grower, who has the advantage of a 

 greenhouse, may find much entertainment in practicing the 

 divers kinds of air-layering, varying the mode and the operation 

 as his ingenuity may suggest. 



