184 APPLICATION OP PRINCIPLES. 



seeds from Brazil, from the Indian Archipelago, and 

 from other intertropical countries, is almost always 

 to be ascribed to the seeds having been originally in- 

 sufficiently dried, and then enclosed in tightly packed 

 boxes, whence the superfluous moisture had no means 

 of escape. 



For seeds containing oily matter, which are pecu- 

 liarly liable to destruction (by their oil becoming 

 rancid ?), ramming in dry earth has been found advan- 

 tageous ; as in the case of the Mango. 



CHAPTEE VIII. 



OF PROPAGATION BY EYES AND KNAURS. 



The power of propagating plants by any other 

 means than that of seeds depends entirely upon the 

 presence of leaf-buds {fig. 16), or, as they are technical- 



