150 EXPERIMENT STATION EECORD. 



infections upon tlie folded lamina of the central leaf are practically certain to 

 talte. Zoospores washed down the leaf may spread infection to deeper por- 

 tions of the leaf, the disease malting rapid progress when the bud is soaked 

 with water. 



The only entirely reliable means of checking the spread of this disease is 

 thought to be destruction of trees as soon as infection is evident, though care- 

 ful pruning has given good results in the drier Godavari district. 



A l)rief bibliography is appended. 



A new Rhizosphsera, F. Bubak (Ber. Dcut. Bot. GcseJL, 32 (WU), No. 3, 

 pp. J88-190). — The author gives the new name R. kalkhoffli to a fungus found 

 on needles of Picea excelsa in Bohemia and France and on P. pungens argentea 

 in the Tyrol, and said to have been previously studied by various other authors. 



A leaf disease of walnuts, F. A. Wolf {Mycol. CentU., 4 {1914), No. 2, pp. 

 65-69, figs. 7). — The Cylindrosporium causing walnut blight and inflicting con- 

 siderable damage in Alabama has been studied by the author and is said to be 

 distinct from other known species. The name C. juglandis u. sp. has been 

 given to the fungus, which is technically described. 



Destruction of fallen leaves in autumn and use of Bordeaux mixture on the 

 first appearance of the infection controlled the disease. 



Heart rot of oaks and poplars caused by Polyporus dryophilus, G. G. 

 Hedgcock and W. H. Long (C/. 8. Dept. Agr., Jour. Agr. Research, 3 (1914), 

 No. 1, pp. 65-78, pis. 2). — ^According to the authors P. dryophilus is widely dis- 

 tributed throughout the United. States, being noted to occur in at least 23 

 States and to attack 29 species of oaks, 3 of poplars, and probably on birch and 

 pine. 



Oak Oidium, E. Foex (Jour. Agr. Prat., n. ser., 27 {1914), No. 11, pp. 333- 

 335). — This is mainly a discussion, partly controversial, regarding the mode of 

 preservation and transmission of Oidium on oak, giving views of several other 

 authors. 



Peculiarities of outbreak of oak Oidium, E. Noffray {Jour. Agr. Prat., 

 n. scr., 21 {1914), No. 16, pp. 494' 495). — A reply to the article noted above. 



Resistance of oak wood to dry rot in relation to tannic acid, C. Wehmeb 

 {Bcr. Dcut. Bot. GcseU., 32 {1914), No. 3, pp. 206-217, figs. 2).— Reporting and 

 discussing his more recent work with wood of domestic and foreign oaks as 

 related to attack from Merulius lacrymans, the author states that in most tests 

 the oak wood proved resistant to the fungus, the exemptions from attack being 

 as previously noted (E. S. R., 27, p. 654), ascribed to the presence of tannic 

 acid. This constituent increases in proportion with the age of the oaks, but 

 very young oak wood is yet to be tested in this connection. 



Further g'ermination studies with spores of Menilius, C. Wehmeb {Ber. 

 Dcut. Bot. Gescll, 32 {1914), No. 4, pp. 254-256, pi. i).— In continuation of a 

 report previously noted (E. S. R.. 29, p. 852), the author states that in later 

 studies carried out with apparently normal siwres from pure cultures of If. 

 lacrymans on favorable media germination did not take place in 24 days. 



ECONOMIC ZOOLOGY— ENTOMOLOGY. 



Digest of the game, fish, and forestry laws, edited by J. Kalbfus (Harris- 

 hurg. Pa.: State, 1913, pp. 320). — This handbook is divided into three parts 

 which contain the text with index of the laws pertaining to game, fish, and 

 forestry. 



Notes on mortality of young of wild birds under natural nesting condi- 

 tions and under artificial or protected states, J. Butler {Rpt. Midi. Acad. 

 8ci., 15 {1913), pp. 114-119). — This paper reports upon observations made along 



