CONTENTS 



ROOT KNOT— CAUSE AND CONTROL, INCLUDING A Page. 



LIST OF SUSCEPTIBLE HOST PLANTS Leroy Ciiilds 737 



PEAR CULTURE— HISTORY AND PRESENT STATUS P. J. O'Gara 756 



A CASE OF ARSENICAL INJURY TO APRICOT TREES.Geo. P. Weldon 766 



THE FROST PROBLEM A. J. Cook 7GS 



GENERAL NOTES— 



Recent Importations of Beneficial Insects in Cali- 

 fornia E. J. Voslcr 770 



A Great Triumph A. J. Cook 770 



CALENDER OF INSECT PESTS AND PLANT DISEASES— E. J. A^osler 772 



INSECT NOTES 'i"3'6 



NOTES FROM THE COUNTY COMMISSIONERS Geo. P. Weldon 777 



Red Spider Spread ey Winds It- P- Bfithhr 777 



QUARANTINE DIVISION— 



Report for the Month of October, 191;] Frederick Maskcw 781 



Quarantine Note George Compere 782 



ERRATA. 



INDEX '^^ 



