By Mr. John Street. 



39 



to full five feet high, flowers and bears seeds in plenty, sows 

 itself all about the dry, gravelly, sandy places, and produces 

 slight varieties ; several plants of it which stood last winter in 

 the open borders, are now flowering. Medicago arborea, a 

 native of Italy, I put out in the spring of 1816, in poor dry 

 earth, under a south wall; it stands the severest winters 

 with no other protection, and flowers abundantly during most 

 part of the year, producing seed, of which I have about one 

 pound ; it sows itself here under a south wall ; the plants 

 become seven or eight feet high. 



I am, Sir, very respectfully, 



your obedient humble Servant, 

 Biel, near Dunbar, J 0HN STREET. 



June 29, 1826. 



Note added by Order of the Council. 



In order to bring into one view the whole of Mr. Street's 

 experience on the important subject of the naturalization of 

 exotic plants, the following Abstract of his Paper in the Me- 

 moirs of the Caledonian Horticultural Society, referred to by 

 him at the beginning of the above communication, is added. 

 It is however to be observed, that several of the plants men- 

 tioned by Mr. Street as having been brought to bear the 

 climate of that part of Scotland in which his experiments 

 were carried on, have been long considered as hardy in the 

 more southern parts of the kingdom, those are consequently 

 not noticed, and the plants which are also mentioned in the 

 Paper now published, are likewise omitted. 



