JAMROSADE CULTIVATED IN FRANCE. 515 



issued from the interior surface of the bark in the wounded 



parts. I therefore took measures to prevent the return of the return of 



the sap through the bark, from the layers to the parent trees, [j-eVwas pre-*^ 



by making, round each branch, two circular incisions through vented by re- 



the bark, immediately above the space where the tongue of ™°''^^ "^'^^'^ 



the layer had been detached} and the bark, between these 



incisions, which were about twice the diameter of the branch 



apart, was taken off. The surface of the decorticated spaces 



was then scraped with a knife, to prevent the reproduction 



of the bark, and the layers were recommitted to the soil ; 



and at the end of a mofith I had the pleasure to observe 



that roots had been abundantly emitted by every one. In and rooto wer* 



other instances I obtained the same results, by simply scraping P''°'^"^^^- 



off, at the same season, a portion of the bark, immediately at 



the base of the tongue of the layers, without taking them out 



of the ground. 



By the preceding mode of management, the ascending Effect of this 

 fluid is permitted to pass freely into the layer to promote its i"aiiageineat. 

 growtli, and to return till the period arrives at whicli layers 

 generally begin to emit roots : the return of the sap through 

 the bark is then interrupted, and roots are, in consequence, 

 emitted ; and I entertain litile doubt that good plants of trees, 

 of almost every species, may be thus obtained at the end of a 

 single season, I wish it, however, to be understood, that my 

 experiments have been confined to comparatively few species of 

 trees ; and that I am not much in the habit of cultivating trees 

 of difficult propagation. 



XIII. 



Qn the CuU'ivation of the Jamrosade (Eitgenia Jainlos L.J in 

 the National Garden at Paris. Ahridgcdfroin the account given 

 ly M. Thouin, in the Jnnalcs du Museum, V.\, p. 35/. 

 By Richard Anthony Salisbury, Esq. F. R. S. <jfc* 



THEjamrosade, or engeniajamlos of Linne, is one of those Jamrosade, or 

 trees, the fruit of which is seldom brought to perfection in r«seapi;Ie. 

 Europe. — In Hindoslan, ^^here it grows wild, it is called jo/n^'O^, 



* Horticult. Trans, vol. 1, Appendix, p. II, 



