PERIODICAL LITERATURE 671 



labor less effective. Provisions, with the exception of hay, advanced 

 from 1915 to 1916 30 to 50 per cent, and pork, which was $21.50 per 

 barrel in 1915, had in 1916 advanced over 60 per cent to $40.50. The 

 costs are made up of stumpage and ground rent, cruising, fire ranging, 

 surveys, and interest, which amount to $3.25 ; woods operation, $7.60 ; 

 driving, rafting, etc., $2.50; sawing, with upkeep and interest, $3.60; 

 piling, insurance and handling, 90 cents; ofifice, interest and selling 

 cost, $1 ; total, $18.85. To this another 80 cents per thousand is to 

 be added because the New Brunswick government log survey, which 

 includes culls, cannot be sawed out of the logs. 

 Canada Lumberman, April 1, 1917, p. 21. 



As a matter of incidental interest, the results 

 Dressing for of a series of experiments with different sub- 

 Wounds stances for covering pruning wounds, by G. H. 



Howe, may be related. White lead, white zinc, 

 yellow ochre, coal tar, shellac, and carbolineum (avenarius) were em- 

 ployed on pruning wounds of various sizes and age of apple and peach 

 trees, with some wounds untreated for check. The observations were 

 made in the two seasons following the treatment. In all cases the 

 untreated wounds healed more rapidly than the protected ones. 

 Shellac caused the least injury to the cambium, but had least adhesive 

 power. Carbolineum and ochre were very injurious, the white paints 

 the least so; especially white lead was most efficacious; tar is evapo- 

 rated too easily. Nothing is gained by waiting with the application. 



In peach trees, and presumably other stone fruit, all substances 

 produce damage. 



The total result is inimical to the use of dressings, but the author 

 admits that for a longer period of observation infection of fungi, 

 which was not observed in the two seasons, might occur and change 

 the finding. 



Bulletin International Institute of Agriculture. Reprinted in The Indian 

 Forester, February, 1917, pp. 105-6. 



