236 Arbor {cultural Notices, supplementary to 



Art. IX. Arbor icultural Notices, collected from various Sources, in- 

 tended as supplementary to, or corrective of, the Information con- 

 tained in the " Arboretum et Fruticetum Britannicum." 



The most remarkable circumstances which have occurred in the arboricultu- 

 ral world since our last article of this kind, in p. 118., are, the publication of 

 the Pinctum Woburnense, reviewed in a future page ; the introduction of nu- 

 merous plants of Picea cephalonica and Picea Pinsdpo ; and the production of 

 a new hybrid Mahdnia in the Sawbiiclgeworth Nursery. 



EVT?110KBIA S CEM. 



TSuxus sempervirens L., Arb. Brit. p. 1333., Hort. Lig. pi. 91. — The highest 

 box tree that we received any account of for the Arboretum Britannicum was 

 21 ft., and the largest hedge 40 yards long, 12 ft. wide at the base, and 15 ft. 

 high. Having seen a notice of a higher hedge in the Gardeners Gazette, as 

 existing at Hitchin, we wrote to the proprietor, W. Wilshere, Esq., M.P. 

 That gentleman obligingly sent us the following answer : — " The box hedge in 

 my garden, about which you wrote to me a few days ago, is 180 ft. in length, 

 and consists of sixty trees ; their height is 36 ft., and their average circumfer- 

 ence, 2 ft. from the ground, is 39£ in. They must, of course, be very old ; but 

 I have no means of judging of their age. They grow close under a building, to 

 which they are attached by iron rods for support. I have always heard it con- 

 jectured that they must have been planted merely as a border, and, when having 

 grown to a considerable height from neglect, that they were afterwards encou- 

 raged in their growth by cultivation. I fear they have seen their best days, as 

 they are getting very thin and ragged. — W. Wilshere. Albany Chambers, March 

 1. 1839." 



ZTlma^cejE. 



Ttie Elm thrives better in calcareous soil than in any other, always excepting 

 a clayey loam, which is the soil of all others best suited for this tree. The 

 elms which line the road from Paris to Meaux grow on a good loam, though 

 the stratum is but thin, on a subsoil of chalk. They appear exceedingly fine 

 trees, till the traveller has passed Meaux ; when, in taking the road to Ferte- 

 Milon, he finds himself in an avenue of larger and more beautifully grown 

 trees, with leaves of a far deeper green. The reason is, the soil is here a clayey 

 loam of some depth. The soil of Paris, from the constant additions which it 

 receives from old buildings, has become so calcareous, that scarcely a tree will 

 grow in it except the elm. Some years ago, the minister of public works pro- 

 posed to introduce a variety of trees in the Boulevards, instead of the elms, 

 which had been cut down, or otherwise destroyed, during the " three days " of 

 July, 1830. He applied to the Horticultural Society, and was furnished with 

 a list of foreign and indigenous species, which it was thought would succeed. 

 M. Poiteau, however, is of opinion that, if these trees had been planted, few 

 or none of them would have succeeded. (Annates a" Hort. Soc. de Paris, §c., 

 torn, xxi.) 



CORYLA^CE-E. 



Corylus Columa, Arb. Brit. vol. iii. p. 2029. — The dimensions of the two 

 large trees of Corylus Columa, which stand in the park before the house at 

 Merkenstein, between Vienna and Baden, are exactly as follows : I. Diameter 

 of the trunk, 3 ft. 4^ in. ; of the head, 72 ft. : total height, 70^ ft. II. Dia- 

 meter of the trunk," 3 ft. 5 in. ; of the head, 63 ft. 9 in.: total height, 61 ft. — 

 Jacquin. Vienna, Sept., 1838. 



TAXA V CEa:. 



Tdxus Hariingtoma, a uoble species of yew, figured and described in the 

 Pinctum Woburnense, will be found noticed at length in a future page. 



PlNA^CEiE. 



Ylnus austrdlis Arb. Brit., P. palmensis Hort., may be grafted on P. Larfcio> 



