THE SELECTION OF TREES. 53 



soil-humidity need be feared, or else on very meager, dry 

 soils, where most shady trees would refuse to grow, and 

 one must make a virtue of necessity. 



5. — The mixing in of the light -foliaged trees in single in- 

 dividuals is preferable to placing them together in 

 groups, unless special soil conditions make the occupa- 

 tion of certain spots by one kind, which may be better 

 adapted to them, more desirable, as for instance, the Ash 

 in a wet ground (slough). Wheu a slower-growing, light- 

 needing kind is to be grown side by side with the quicker- 

 growing shady one — as for instance, Oak and Catalpa — 

 a group of Oaks will have more chance to withstand the 

 shade of the densely foliaged Catalpa than the single in- 

 dividual." 



The late Dr. John A. Warder, who was the first man 

 in America to make an effort at developing a system of 

 forestry adapted to this country, expressed his hopes, tha,t 

 we would in the course of time come to an expedient pro- 

 cess for the care of our forests, dependent upon the correct 

 answers of the question : Which trees should be planted 

 in mixed groups, and which trees are obnoxious to one 

 another ? He observed that it is necessary to know re- 

 specting each of this species: 



l.--Tlie term of rotation of trees. 



2. — The height attained by the trees at maturity. 



3. — The rapidity of their growth. 



4. — What trees should never be grouped together. 



5. — What trees are exclusive, and should be planted in 

 masses by themselves. 



6. — Which require the protecting care of nurses. 



From all this, appears the urgent necessity of estab- 

 lishing experimental stations in those parts of our 

 country which are in need of the helping hand of the 

 forester. 



As far as my own experience in this State goes, I can 



