Canadian Forestry Journal, June, 1920. 



287 



4. Use trees that are native to the 

 locality wherever possible. They give 

 quick results and furnish variety. 



5. Along roads that have been en- 

 tirely denuded of tree growth, plant a 

 temporary and a permanent tree alter- 

 nately. An example would be : The 

 sugar maple for permanent and the 

 "box elder for quick results and remov- 

 al later when the sugar maple had at- 

 tained viseful size. 



6. Space trees on the highway ac- 

 cording to the spread of their crowns 

 at maturity. Taking the sugar maple 

 as an example with a spread of crown 

 of 35 feet from the stem we see that 

 a spacing of less than seventy feet 

 will permit the interlacing of branches 

 which is not desirable with highway 

 trees ; therefore, a safe spacing for 

 sugar maple is 85 feet with trees on 

 the opposite side of the highway to 

 alternate. A planter may determine 

 the safe highway planting distance for 

 any species by measuring the crown 

 spread of a fully mature specimen of 

 that species and adding ten feet to 

 the result. 



FREEZING ROOTS OF TREES 



(Saskatoon Star) 



One can plant trees or shrubbery 

 here with practically perfect assur- 

 ance that they will live through the 

 first winter, which is the time of dan- 

 ger, if proper care is taken of them. 

 Many gardeners get the idea that if 

 they can prevent the roots from freez- 

 ing they are doing the proper thing, 

 whereas it is perfectly natural for the 

 roots of all the trees and shrubs to 

 freeze up during the winter months. 

 and does no harm whatever. The i)ro- 

 per method is to let the roots freeze 

 hard in the fall, waiting for good stiff 

 winter weather to accomplish this. 

 Once they are frozen, during the first 

 winter they should be covered deep 

 "with any kind of covering that will 

 prevent them from thawing out too 

 early in the spring. If the snow is 

 deep around them this will help, but 

 in any case they should be covered 

 over. 



What does damage is alternate 

 thawing and freezing in the spring. 



and it is the same thing with fall 

 wheat. If the spring weather is con- 

 sistently cold, and the break-up gradu- 

 al, then the wheat will winter well. 

 If, however, there is an early and com- 

 plete thaw, and then later freezing 

 weather again, fall wheat, or trees, 

 shrubs and perennials, are likely to be 

 "winter-killed." Consistently cold 

 weather in the winter, with a slow 

 break-up in the spring, is the best pos- 

 sible protection. 



POCKETBOOK TESTIMONY 



"In regard to forest conservation, 

 the organization of public support is 

 facilitated by the fact that the ques- 

 tion directly affects the pocketbook 

 of practically every member of the 

 community. 



"It affects every man who wants 

 to build, buy or rent a house — or fur- 

 nish a home. The rising cost of lum- 

 ber has been a decided factor in re- 

 tarding the building of houses to re- 

 lieve the housing shortage that has 

 contributed so largely to the dissat- 

 isfaction and unrest that are current 

 today. It affects every man who buys 

 a newspaper or periodical, a booi< tor 

 his library or textbooks for his child- 

 ren at school. It touches the pocket 

 of every merchant, manufacturer or 

 other business man who buys adver- 

 tising space. It affects every man 

 who has a dollar invested in forest 

 industries and our total capital invest- 

 ments in these enterprises approaches 

 the stupendous sum of $400,000,000. 

 Finally, it affects every man em])loy- 

 ed in such industries of whom there 

 are more than 80,000, with many ad- 

 ditional thousands employed in wood- 

 working establishnieiits of one form 

 or another that are directly depoiulont 

 upon forest production. 



"There isn't any (juestion as to tiie 

 motive behind fc:»rest conservation. It 

 is a question purely of hard business 

 sense — not of sentiment." (I-'rom an 

 address by Mr. James W^hite. assis- 

 tant to the chairman of the Commis- 

 sion of C"<Hiservation). 



