456 



NATURAL HISTORY OF PLANTS. 



remain long intact. That of Ailantus, especially after being soaked 

 in water, is used by wheelwrights, cabinet-makers, and for firing, 

 &c.' That of PAeUodendron, porous and light, takes the place of 

 cork on the banks of the Amour. The wood of several species of 

 Simaruba, Zanthoxylon, Ptclea, Esenbechia, Coriaria, Casimiroa, 2 are 

 valued in America for industrial and domestic purposes. At the 

 Cape, the wood of Calodendron capoise is used in the same way. The 

 hardest, heaviest, and best for cabinet work [is certainly that of 

 various species of Guaiacum, G. officinale, sanctum, hygrometricum, 

 arboreum? &c. Several Rutacece are ornamental : the Aurantieae, cul- 

 tivated for their foliage and fruits ; the Diosmece and Boroniea, 

 valued in our greenhouses for their flowers ; some Cuspariece of the 

 genera Erytkrochiton, Galipea, Ahneidea, Ravenia, ornamenting our 

 hothouses ; some species of Ruta, Dlctamnus, Harmala, and Fabayo, 

 growing in the open air in France ; Ptelea, Phellodendron, Cneorum, 

 Skimmia, and some species of Zanthoxylon* whose foliage embellishes 

 our gardens ; finally, the glandular Ailantus, so useful in industry 

 and agriculture. 



1 A. iniberhijlora (F. Mttell., Fragm., iii. 

 42 j — Benth., Fl. Austral., i. 392) has a 

 wood used in Australia. The branches of J3ou- 

 chardatia are used by the blacks of the country 

 in making lances. 



2 The fruits of Casimiroa are sold as edible 

 in Mexico. 



3 Upon their characters and uses, as upon 

 the wood of Passiflora (Fr. Q-renadille), see 

 GrJiB., op. tit., iii. 548, 550. 



4 Some, ^specially Z. nitidum, piperitum, 

 flower in our greenhouses. 



