210 APPLICATION OF PBINCIPLES. 



" stump" of the Pine apple, it should be placed in a 

 damp pit, and exposed to a bottom heat of 90° or 

 thereabouts, when every one of the latent eyes will 

 spring forth, and a crop of young plants be the re- 

 sult. Mr. Alexander Forsyth, a very sensible writer 

 upon these subjects, pointed this out some years since 

 in the Gardener's Magazine (xii. 594) ; and there can 

 be no doubt that his observations upon the folly of 

 throwing away stumps are perfectly correct both in 

 theory and practice. 



The practice of scarring the centre of bulbs, the 

 heads of Echinocacti and such plants, and the crown 

 of the stem of species like Littsea geminiflora, in all 

 which cases suckers are the result, is explicable upon 

 the foregoing principles. 



OHAPTEE XII. 

 OF PROPAGATION BY BUDDING AND GRAFTING. 



These operations consist in causing an eye or a 

 cutting of one plant to grow upon some other plant, 

 so that the two, by forming an organic union, become 

 a new and compound individual. The eye, in these 

 cases, takes the name of bud, the cutting is called a 

 scion, and the plant upon which they are made to 

 grow is named the stock. 



Propagation by eyes and cuttings is, therefore, the 

 same as budding and grafting, with this important 



