NOTES AND ABSTRACTS. 



779 



value conferred upon dung by cake-feeding is not of an enduring 

 nature ; the first crop grown with the dung gets the benefit, and to 

 a slight extent the second ; but the added fertility due to the cake- 

 feeding has not the lasting effect of the dung itself. — A. S. 



Fire-blight Disease in Nursery Stock. By V. B. Stewart (U.S. A. 

 Exp. Sin., Cornell, Bull. 329; April 1913 ; figs.). — This disease; 

 due to Bacillus amylovorus, is not yet definitely known to exist in 

 Great Britain. A full account is given of it and the methods of control, 

 which in the case of nursery stock consist mostly in the removal of 

 diseased pieces by means of a knife sterilized with corrosive sublimate 

 and the prompt destruction of the prunings. — F. J. C. 



Forest Fire Protection under the Weeks Law in Co-operation 

 with States. By J. Girvin Peters (U.S. A. Dep. Agr., Forest Service, 

 Circ. 205 (1st revision), January 8, 1913). — The Forest Service is 

 charged with the protection of 163 National Forests, aggregating nearly 

 200,000,000 acres. The importance of protection against fires cannot 

 be overrated when it is estimated that on an average 10,000,000 acres 

 are burned over annually in the United States. — A . D. W. 



Forest Fires on Standing Hardwood Timber, Effect of. By 



W. H. Long (U.S.A. Dep. Agr., Forest Service, Circ. 216, May 31, 

 1913). — Excellent advice is here given as to the citizen assisting the 

 State in dealing with forest fires. The continued burning of timbered 

 lands in Arkansas is causing an annual loss of thousands of dollars — 

 an absolute detriment to the welfare of the State. It is suggested 

 that much good may be brought about if all the people will only 

 co-operate in the work of preventing forest fires. — A. D. W. 



Forest Fires, Methods and Apparatus for the Prevention and 

 Control of. By D. W. Adams (U.S.A. Dep. Agr., Forest Service, 

 Bull. 113, November 8, 1912). — It is not generally realized that 

 in some parts of America the losses, including those of forest 

 produce and young trees, are in excess of the annual consumption of 

 timber for commercial uses. The various methods of combating 

 forest fires have received much attention in the Arkansas woodlands, 

 and the most reliable and up-to-date are included and illustrated in 

 this bulletin.— 4. D. W. 



Forest, The Composite Type on the Apache National. By 



Harold H. Greennamyre (U.S.A. Dep. Agr., Forest Service. Bull. 125, 

 January 25, 1913). — The Colorado blue spruce (Picea Parry ana) has 

 hitherto only been found in quantity in the Central Rocky Mountain 

 States, but now, mixed with the Western Yellow Pine (Pinus ponderosa) 

 and Douglas Fir (Pseudotsuga taxifolia), it has been discovered in 

 considerable quantity on the Apache and adjacent National forests 

 in Southern Arizona. This combination of three species, each having 

 different requirements, makes it possible for a complete utilization of 

 the ground, thus satisfying at least one of the objects of sylviculture. 



A. D. W. 



