37 



Germany (see Professor Mayr)." The planta- 

 tions are too young to show very much at 

 present. 



13. Catalpa speciosa, Warder, Western Catalpa, 



Hardy Catalpa. 



The planting trials are of small extent, and 

 have only been really successful in situations 

 with long, warm summers. 



14. Fraxinus americana, L., American White 



Ash. 



Introduced in the middle of the eighteenth 

 century, extended plantations (Dessau 2) of 

 grown trees of this species exist. Also recently 

 the American ash is often planted instead of 

 the indigenous ash in Germany. Schwappach 

 mentions a plantation area in the aggregate of 

 67*62 acres in the year 1901. With the excep- 

 tion of one unimportant advantage, that of a 

 little greater frosthardiness (in the late spring), 

 this ash does not possess either in the wood or 

 in rate of growth any quality that would justify 

 planting it in preference to the indigenous ash. 

 It is stated at Dessau 3 that the wood of the 



' "Ergebnisse der Anbauversuche mit amerikanischen 

 etc. Holzarten." "Fw. Zentralbl.," 1898. 



^ Danckelmann, "Fraxinus americana," "Z. f. F. u. J.," 

 1881, p. 118. 3 Schwappach, I.e., 1896, p. 337. 



