Contents xxi 



CHAPTER XXn 



PACE 



Family Umbellifers; 354 



Diseases of the Carrot 

 Diseases of the Celery 

 Diseases of the Parsley 

 Diseases of the Parsnip 

 Weeds 



PART IV 



CHAPTER XXm 

 Methods of Control ..... 361 



CHAPTER XXIV 

 Control of Insect Pests by Natural Factors 375 



CHAPTER XXV 



Treatment of Fence Posts .... 378 



Glossary . 381 



Index 387 



