Periodical Literature. 527 



so-called from the cherry-like bark, and Cherry Birch of the 

 logger, so-called from the reddish appearance of the wood of fast 

 grown Yellow Birch, — has misled our German friends, who were 

 looking for the highly prized wood of the latter, to introduce 

 widely the small nearly useless Bcttila lenta. When praising 

 Betula lutea for planting on fire lines, it appears to us that another 

 mistake is made, for this birch very differently from the European 

 White Birch, which is planted on such strips on account of its 

 scanty foliage, is rather densely foliaged and, similarly to the 

 White Pine among the pines, the most shade enduring, i. e. 

 densely foliaged, among the birches. 



Carya is said to require good fresh soil, will stand even compact 

 loam but needs protection for the first 6 to 8 years because of 

 slow development. After that slow juvenile period follows a 

 very rapid height growth. It is advocated to grow the same in 

 rather open position, since it cleans easily but needs much room 

 for the development of its mighty foliage and remains slender and 

 bends over if grown in dense position. At the age of 20 years it 

 requires at least 6 to 8 feet spacing. It is easily damaged by mice. 



No satisfaction has been had in Freienwalde with Juglans 

 nigra, owing to soil conditions, (hard marl sub-soil) ; it requires 

 deep mild soil. Similar behavior is noted for Fraxinus alba, 

 and it is recommended for use in overflow lands ( ? Ed.). 



A word of praise is given to Thuya gigantea, which seems to 

 thrive on better, fresh loamy soils and excels by its rapid growth. 



Die Ausldnderkultiiren in dcr Oherforsterei Freienwalde. Zeitschrift 

 fiir Forst-u. Jagdwesen. June, 1912. Pp. 385-386. 



In a publication devoted to form classes and 

 Aspen form tables for Scotch Pine, Baron Krii- 



in dener from the Imperial Forest administra- 



Russia. tion in St. Petersburg brings interesting 



data, as reported by Guse, regarding the de- 

 velopment of Aspen in northern Russia, which in part are ap- 

 plicable to our own, except that Populus tremula grows into a 

 larger tree as a rule, than P. tremuloides. 



"If one were to attempt a characterization of all the forest 

 types in which the Aspen occurs, it would be necessary to include 

 almost all species. The aspen accompanies the conifers to the 

 farthest north. It tolerates shade like spruce and fir (not ours!) 



