39 



best American timber — that of Indiana, Ken- 

 tucky, and Tennessee — is superior. 



1 6. Juglans cinerea, L., Butter Nut. 



In consequence of the small value of the timber 

 of this tree, it has scarcely been planted in 

 Germany. 



Only Austria ' and Livonia 2 mention this tree 

 as a plantable and plantworthy one, as the tree 

 will still grow in climatic situations where the 

 black walnut already gives out. 



17. Liriodendron tulipiferum, Tulip Tree, 

 Yellow Poplar. 



Although this species is to be found as a grown 

 tree all over Germany in the warmer situations, 

 and although the wood is well known as being 

 soft, easily worked, and durable (according to 

 Mayr especially suitable for water-pipes), it 

 has not received any attention forestally there ; 

 only in France 3 has the tree found a place in 

 sylvan plantations. Vonhausen4 had in 1881, 



' Cieslar, I.e., pp. loi, 150, 196. 



= "Forstliche ausstellung zu Riga, 1899," and Mayr, 

 " Naturwiss. u. forstl. Studien im nordw. Ruszland," 1900. 



3 " Le Tulipier," by P. Mouillefert. " Revue des Eaux et 

 Forgts," 1897. 



t " Einbiirgerung fremder Holzarten," " A. F. u. J. Z.," 

 1881, p. 297. 



