Periodical Literature. 419 



Hauch reports on the observed striking 



Oak variations of young oaks of different de- 



Seed rivation ; those grown from Dutch and 



Supply French seed showing less developed spread- 



Influence. ing habit, straighter and slenderer stems and 



better form than the native Danish- Some 



12 different sowings with seed from 9 different localities were 



made in 1 909-1912 ; the northern oaks show specially stout shoots 



and well developed buds, the southern have long slender shoots 



and poorly developed buds. A most striking observation is that 



the liability to attacks from "Mehltau" — mildew (see Vol. XI, 



p. 269) — is variously developed, and apparently is in relation to 



the development of August shoots: the stronger this late shoot 



development the more insidious the attack of the fungus, since 



at that time spores are abundant and hence attack the new foliage 



readily. 



In this respect apparently the northern races were somewhat at 

 a disadvantage, although the final examination did not sustain 

 the expectation of relating this liability to the place of derivation. 

 Yet the time of the August shoot may in a secondary degree in- 

 fluence the fungus development. The plants which are not at- 

 tacked may be those which form no such late shoots. Quercus 

 rubra seems to be least liable to the fungus. 



Buchen- und Eichenkulturen in Bregentved, Ddnemark. Centralblatt 

 fiir das gesammte Forstwesen. April, May, 191 3. Pp. 149-164; 205-222. 



An unsigned note gives account of a plan- 

 Sitka tation in the city forest of Frauenfeld 



Spruce. (Switzerland) made 11 years ago of Sitka 



Spruce on soil so shallow and dry that in 

 the summer of 191 1 almost all Norway Spruces and many Scotch 

 and Banksian Pines succumbed. The 15-year-old Sitka Spruce, 

 5 to 6 feet high did not suffer at all, made good shoots and pre- 

 served their excellent green foliage. On the other hand, the 

 same spruce planted five years ago on a drained, somewhat 

 mucky soil look sickly and promise little. 



Von der Sitkafichte. Schweizerische Zeitschrift fiir Forstwesen. May, 

 1913. P. 175- 



