172 TRANSPLANTATION. 



may arise from the temporary suspension of the action of the 

 spongioles, and the noncessation of perspiration during the 

 operation. 



363. So that transplantation may take place at all seasons of 

 the year, and under all circumstances, provided thespongioles 

 are uninjured. 



364. This applies to the largest trees as well as to the 

 smallest herbs. 



365. But as it is impossible to take plants out of the earth 

 without destroying or injuring the spongioles, the evil conse- 

 quences of such accidents must be remeuied by the hindrance 

 of evaporation. 



368. Transplantation should therefore take place only when 

 plants are torpid, and when their respiratory organs (leaves) 

 are absent ; or, if they never lose those organs, as evergreens , 

 only at seasons when the atmosphere is periodically charged 

 with humidity for some considerable time. 



367. Old trees in which the roots are much injured form 

 new ones so slowly, that they are very liable to be exhausted 

 of sap by the absorption of their very numerous young buds 

 before new spongioles can be formed. 



366. The amputation of all their upper extremities is the 

 most probable prevention of death ; but in most cases injury 

 of their roots is without a remedy. 



369. Plants in pots being so circumstanced that the spongi- 

 oles are protected from injury, can, however, be transplanted 

 at all seasons, without any dangerous consequences. 



