APPENDIX. 



A. LAWS REGARDING THP] SPRAYING OF PLANTS. 



Many of the organisms which attack cultivated plants have 

 become so abundant and serious in certain localities that com- 

 munities have taken measures to check the spread of existing 

 parasites, and also to prevent the introductions of different ones 

 which occur in other localities. A few States have passed quar- 

 antine laws with this end in view, all nursery stock being rigidly 

 examined, and treated if necessary, before its passage into the 

 State is allowed. The exportation of trees, etc., from very re- 

 stricted areas within certain States has also been forbidden. 

 The suppression of insect and fungous diseases is thus rapidly 

 increasing in importance, and laws aiming at their extermina- 

 tion are being more and more frequently passed. Several of 

 these consider the spraying of plants, and below will be found 

 the leading points concerning these acts. 



CALIFORNIA has been a pioneer in legislating against plant 

 diseases. On March 14, 1881, there was approved "An Act 

 to Protect and Promote the Horticultural Interests of the 

 State." It was amended by an act approved March 19, 1889, 

 and by an act approved March 31, 1891. Section 1 states : 

 " Whenever a petition is presented to the Board of Supervisors 

 of any county, and signed by twenty-five or more persons who 

 are resident freeholders and possessors of an orchard, or both, 

 stating that certain or all orchards or nurseries, or trees of any 

 variety are infested with scale insects of any kind injurious to 

 fruit, fruit trees, and vines, codlin-moth, or other insects that 

 are destructive to trees, and praying that a commission be 



375 



