,a,Ol 



APRIL 

 Vol. m. No. 5. 1906. fO Cte. If jOO a Ycm. 



. 



HORTICULTURAL NUMBER 



FOR CALIFORNIA 



FRONTISPIECE.— LATEST PHOTOGRAPH OF LUTHER BURBANK 



EDITORIAL 



LARGE PROFIT IN GROWING WALNUTS 



LUTHER BURBANK 



HISTORY OF CALIFORNIA FRUIT GROWING E. J. WICKSON 



SCIENTIFIC IRRIGATION W. E. SMYTHE 



GRAPE GROWING FOR WINE FREDERIC T. BIOLETTI 



THE CITRUS FRUIT INDUSTRY b. A. WOODFORD 



THE CALIFORNIA PROMOTION COMMITTEE 



SAN FRANCISCO 



