ACKNOWLEDGMENT. 



There are now before the public many books which cover in part much 

 of the work offered in this bulletin. None of them to our knowledge, 

 however, deal with the questions from the strictly Californian stand- 

 point of view and this is absolutely necessary in a state where there are 

 so many factors which necessitate minor changes in the routine of many 

 planting operations. We have, therefore, followed closely or distantly 

 many of the eastern works according as they aided our point of view. 

 We have gained from many publications both from books put forth by 

 private individuals and those valuable publications from the various 

 experiment stations. 



In addition to the generous store of information to be gleaned from 

 the press there have been many California friends who have given freely 

 of their time and information because they believed that a popular 

 bulletin on this subject would be worth while and arouse greater interest 

 in the public mind toward the beautification of our city streets. 

 Especial thanks are due to Dr. H. M. Hall of the State University for 

 valuable criticisms and suggestions ; to Miss Katherine Jones for assist- 

 ance in many ways ; to Mr. J. H. Reed of Riverside, who gave generously 

 of his time and information; to Miss Kate Sessions of San Diego and 

 Mr. Ernest Braunton of Los Angeles. Among others who should be 

 mentioned are Mr. John Morley, Mr. Max Watson, Mr. Leonard Coates, 

 Mr. Frank Gore, Mr. J. C. Hardman, and many others. To all of 

 these friends we extend our heartiest thanks and appreciation. 



It has been our aim and our desire to make the contents of this 

 bulletin as practical and simple as possible. There is now a widespread 

 interest in shade trees abroad in our State and we hope that this bulletin 

 may be of some value in stimulating that interest and in bringing about 

 more active and intelligent planting operations which will make our 

 state as much talked of for its magnificent avenues as for its wonderful 

 natural wealth and beauty. 



