S5S ARBORETUM AND FRUTICETUM. PART III. 



the others of the genus, can only be considered as ornamental trees; but in 

 that character they hold the first rank; their delicate acacia-like foliage, and 

 the singularly varied, graceful, and picturesque forms assumed by the tree, 

 more especially when young or middle-aged, together with the singular fea- 

 ture afforded by its spines, will always recommend it in ornamental plant- 

 ations. 



Soil and Situation, Propagation, $c. It requires a deep, rich, free soil, and 

 a situation not exposed to high winds; the climate ought, also, to be some- 

 what favourable, otherwise the wood will not ripen; and it requires the 

 climate of the south of England, or the summers of France, to ripen the 

 seeds. The species is always propagated by seeds imported from America, 

 or from the south of France, or Italy ; for, though seed pods are seldom 

 seen hanging from the trees in the neighbourhood of London, or even in the 

 south of England, they are produced abundantly in various parts of France, 

 even in the neighbourhood of Paris ; and seeds are ripened in fine seasons 

 in Austria. Cobbett directs the seeds to be prepared for sowing by soaking 

 them for 12 hours, as directed for those of the robinia. (Seep. 624.) The 

 seeds, he says, when soaked and sown in March, will come up in a fortnight. 

 They are best transplanted to where they are finally to remain when quite 

 young ; as they make but few fibrous roots, and these take, for the most 

 part, a descending direction. The variety G. t. inermis can only be insured 

 by grafting on the species. In general, however, abundance of plants without 

 spines may be selected from beds of seedlings of G. triacanthos. 



Statistics. Gleditsch'm triacdntfws in the Environs of London. At Syon there is a tree 57 ft. high, 

 diameter of the trunk 3 ft., and of the head 63 ft. ; see the plate of this tree in Vol. II. In the garden 

 of J. Nichols, Esq., (the Chancellor's, Queen Street,) Hammersmith, there is a tree of this species 

 47 ft. high, with a trunk 14 in. in diameter. At Purser's Cross, it is 40 ft. high ; at Ham House, 30 ft. 

 high. At Kenwood, 38 years planted, it is 44 ft high ; in the Mile End Nursery, 38 ft. high. 



Gleditschia triacanthos South of London. In Dorsetshire, at Melbury Park, 25 years planted, and 

 25 ft. high, the diameter of the trunk 10 in. In Surrey, at Lady Tankerville's, at Walton on Thames, 

 60 years planted, and 65 ft. high, the diameter of the trunk 2 ft., and of the head 60 ft. 



Gleditschw triacanthos North of London. In Monmouthshire, at Tredegar House, 50 years planted, 

 and 40ft. high. In Oxfordshire, in the Oxford Botanic Garden, 40 years planted, and 30ft. high, 

 the diameter of the trunk 11 in., and of the head 20 ft. In Suffolk, at Ampton Hall, 15 years planted, 

 and 25 ft. high. In Warwickshire, at Whitley Abbey, 5 years planted, and 12ft. high. In Wor- 

 cestershire, at Croome, 30 years planted, and 40ft. high. In Yorkshire, at Grimstone, 52ft. high. 

 At Knedlington, 10 years from the seed, 13 it. high. 



Gleditsch'vA triacanthos in Scotland. In Berwickshire, at the Hirsel, 6 years planted, and 8 ft. high. 

 In Haddingtonshire, at Tyningham, 16 years planted, and 34ft. high. In Ross-shire, at Brahan 

 Castle, 20 ft. high. In Renfrewshire, in the Glasgow Botanic Garden, the tree is planted against a 

 wall, but is generally killed down to the ground every year. In Sutherlandshire, at Dunrobin CasUe, 

 16 years planted, 10^ ft. high. 



Glcditschia. triacanthos in Ireland. At Cypress Grove, 15 years planted, and 20 ft. high. At 

 Terenure, 15 years planted, and 10 ft. high. In Cullenswood Nursery, 20 years planted, and 30 ft. high. 

 In Down, at Moira, near Belfast, 55 ft. high, diameter of the trunk 1 ft. 3 in., and of the head 36 ft. 



Gleditsch\& triacanthos in Foreign Countries. In France } at Paris, in the Jardin des Plantes, 100 

 years planted, and 80 ft. high, and the diameter of the trunk 2 ft. ; in the Botanic Garden at Toulon, 

 50 years planted, and 70 ft. high ; at Colombier, near Metz, 70 years planted, and 55 ft. high, with a 

 clear trunk of 30 ft. ; at Nantes, in the nursery of M. De Nerrieres, 40 years planted, and 50 ft. high. 

 In Saxony, at Worlitz, 4fi years planted, and 40ft. high. In Austria, near Vienna, at Laxen- 

 burg, 40 years planted, and 25 ft. high ; at Briick on the Leytha, 45 years planted, and 47 ft. high. 

 In Prussia, at Sans Souci, 45 years planted, and 50ft. high. In Bavaria, at Munich, in the Bo- 

 tanic Garden, 34 years planted, and 30ft high. In Cassel, at Wilhelmshoe, 12 years planted, and 

 8 ft. high. In Denmark, at Droningaard, 40 years planted, and 16ft. high. In Sweden, at Lund, 

 12 ft. high. In Russia, in the Crimea, the tree ripened seeds in 1827, and again in 1828 and 1829, from 

 which young plants have been raised. (Mdm. de la Sac. Econ. Rar. de la Iluss. Merid., 1. p. 40.) In 

 Italy, in Lorobardy, at Monza, 2!) years planted, and 30 ft. high. 



(ilcrlitxcfria. triacanthos inermis. In England, in the environs of London, at Syon, 72 ft. high, di- 

 ameter of the trunk 2 ft. 4 in., and of the head 71 ft. : see the plate of this noble tree in our Second 

 Volume In Hertfordshire, at (heshunt, 8 years planted, and 17 ft high. In Warwickshire, at 

 Whitley Abbey, 6 years planted, and 14ft. high. In France, at Martefontaine, 46 ft. high; and in the 

 Toulon Botanic Garden, 36 years planted, and 50 ft. high. In Saxony, at Worlitz, 35 years planted, 

 and 30 ft. high. In Austria, at Laxenburg, near Vienna, 16 years planted, and 20ft. high ; at Briick 

 on the Leytha, 10 years planted, and 45 ft. high. In Hanover, in the Botanic Garden at Gottingen, 

 I punted, and .'/0 ft. high. 



Com mr, ci'il Statistics. One year's seedling plants of the species, in the 

 London nurseries, are I0.v. perl 000 j trees 6 ft. high, from 2s. to 2s. (id. each; 

 and Beedfl arc l.v. per packet; and plants of G. t. inermis are 2s. (id. each. 

 At Bollwyller, plants of the species are I franc each; and of G. t. inermis, 

 I frmc 60 centf. At New York, plants of the species are from 25 cents to 

 50 centfl each, and of the variety, (J. t. inermis, .50 cents; and seeds of the 

 are I dollar per lb. 



