58° QUINCE CULTURE. ~ 
have a piece of apple or quince root grafted on to push 
them. The chief thing is to guard against the exhaus- 
tion of sap by evaporation until roots are formed. Fa- 
cilities for regulating light, heat, air, and moisture with 
precision will enable us to succeed with a succulent cut- 
ting furnished with a few leaves. When the air is 
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Fig. 28.—LARGE CUTTING. Fig. 29.—ROOT-GRAFTING. 
warmer than the earth, buds are excited more than roots; 
and when the ground is warmest, root growth is most ex- 
cited. Hence the custom of burying cuttings inverted 
during the winter, to keep the buds dormant while a 
callus is forming for the emission of roots. 
In preparing the small cuttings to receive the pieces of 
roots grafted on them. the chief thing is to have their 
