734 



ARBORETUM ET FRUTICETUM BRITANNICUM. 



1416. J. regia. 



The species is propagated by the nut ; which, when the tree is to be grown 

 chiefly for its timber, is best sown where it is finally to remain, on account of 

 the taproot, which will thus have its full influence on the vigour and prosperity 

 of the tree. Whei'e the tree is to be grown for fruit on dry soils, or in rocky 

 situations, it ought also to be sown where it is finally to remain, for the same 

 reasons. In soils on moist or other- 

 wise unfavourable subsoils, if sown 

 where it is finally to remain, a tile, 

 slate, or fiat stone, should be placed 

 under the nut at the depth of 3 or 

 4 inches, in order to give the taproot a 

 horizontal direction ; or, if this pre- 

 caution has been neglected, after the 

 plants have come up, the taproot 

 may be cut through with a spade 6 or 

 8 inches below the nut, as is sometimes 

 practised in nurseries with young 

 plants of the horsechestnut, sweet 

 chestnut, walnut, and oak. On the 

 other hand, when the walnut is planted 

 in soil which has a dry or rocky subsoil, 

 or among rocks, no precaution of this 

 sort is necessary : on the contrary, it 

 would be injurious, by preventing the 

 taproot from descending, and deriving 

 that nourishment from the subsoil 

 which, from the nature of the surface 

 soil, it could not there obtain. The 

 varieties may be propagated by bud- 

 ding, grafting, inai'ching, or layering, in common soil. The walnut tree attains 

 the largest size in a deep loamy soil, dry rather than moist ; but the fruit 

 has the best flavour, and produces most oil, when the tree is grown in cal- 

 careous soils, or among calcareous rocks : in a wet-bottomed soil, whatever 

 ma}' be the character of the surface, it will not thrive. 



S 2. J, nTgr.v L. The hl^ick-ivooded Walnut Tree. 



Identification. Lin. Hort. Cliff., p. 140. ; Willd. Sp. PI., 4^ p. 4.5G. ; Pursh Sept., 2. p. G3G. 

 Synotiymcs. The black Walnut, the black Hickory Nut, K. Amcr. ; Noyer noir, Fr. ; Noce nera, 



Hal. 

 Engravings. Michx. Arb., 1. 



t. 1.; Michx. North Amer. 



Sylva, t. 30. ; Dend. Brit., t. 



158. ; the plate of this tree in 



Arb. Brit., 1st edit., vol. vii. ; 



and our Jig. 1417. 



Spec. CJiar., S^c. Leaflets, 

 in a leaf, 13 17; cor- 

 date-acuminate, une- 

 qual at the base, ser- 

 rated, and somewhat 

 downy ; lateral ones 

 upen short petiolulcs. 

 Fruit globose, roughish 

 with minute prominent 

 points, situated upon a 

 short inflexible pedun- 

 cle. IS'ut globose, some- 

 what compressed at the 

 sides, ridged and fur- 

 rowed. {Michx.') A 

 larce deciduous tree. 1417. j. nigis 



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