18 



PREVENTING THE SPREAD OF THE SCALE. 



Concerning this Mr. L. O. Howard, entomologist to the 

 U. S. Department of Agriculture, says: "The principal mode 

 of spread is by commerce in nursery stock, cuttings, and fruit. 

 The time will come in the immediate future when some kind of 

 quarantine regulations will have to be established by states, or 

 by large fruit-growing districts. Should this species already 



© 



Fig. 13. 



San Jose Scale : c, adult female containing young — greatly en- 

 larged ; d, anal fringe of same — still more enlarged. 



have obtained the firm foothold in the East which we suspect. 

 New York, Michigan, and other states, in which the pomologi- 

 cal interests are great, should immediately, by act of legislature, 

 establish quarantine regulations similar to those in force at the 

 present time in the state of California. In the meantime no 

 orchardist should admit a single young fruit tree, or a single cut- 

 ting, or a single bud, from a distance into his orchard, without 

 first carefully examining it, and satisfying himself absolutely that 



