3 8 THE NURSERY-BOOK. 



shown in Figs, 28 and 29. The trays are filled with earth and 

 the branches are laid in through the 

 chinks in the border and are treated in 

 the same manner as ordinary out-door 

 layers. These racks supply a neat and 

 convenient means of increasing green- 

 house plants which do not readily strike 

 from cuttings. 



It is well to bear in mind that when 

 layers do not give strong plants, they can 

 be divided into portions and treated as 

 ordinary cuttings. This is an important 

 operation in the case of rare varieties 

 which are multiplied by means of soft or 

 green layers, as some of the large-flow- 

 ered clematises and grapes. The weak small plants are handled 

 in a cool greenhouse or under frames, usually in pots, and they 

 soon make strong individual? 



Fig. 



Kier's layering 

 rack. 



Fig. 29- 



Kier's circular layering 

 rack. 



