VOLUME II 



No. 5 



THE MONTHLY BULLETIN 





Cross section of orange showing course of tlie 

 black rot from the navel to the center. (Draw- 

 ing by Amundsen.) 



OF 



STATE COMMISSION OF HORTICULTURE 



SACRAMENTO, CALIFORNIA 



MAY, 1913 



Printed at State Printing Office, Friend Wm. Ricliardson, Superintendent. 



