HORTICULTURE. 149 



Those larvae which are full grown by the first of August, 

 may give rise to the second brood of moths in the same year. 



In some of the states it is claimed that there are as many 

 as three broods. 



A large portion of the damage done to picked fruit is by the 

 second generation of larvae. 



TREATMENT FOR CODDLING MOTH. 



Arsenate of lead and paris green are said to be the only 

 arsenical insecticides in general use for this pest. 



Arsenate of lead is to be preferred, because of its ad- 

 hesiveness. 



The composition of Arsenate of Lead is as follows : 



Arsenate of soda, 4 ounces. 

 Acetate of lead, 11 ounces. 

 Water, 3 to 5 gallons. 



Dissolve the ingredients, each in one-half to one gallon of 

 warm water. Mix together and put into spray tank contain- 

 ing from 50 to 100 gallons of water. Add the milk of lime 

 from two to three pounds of freshly slaked stone lime. 



While costing more than paris green, arsenate of lead is 

 generally regarded as more economical in the end because of its 

 adhesive quality. 



For most purposes the commercial product should be used in 

 the proportion of 3 pounds of the arsenate of lead to 50 gallons 

 of water. 



See spray calendar for time of spraying. 



San Jose Scale. 



One of the most destructive insects that has infested the 

 orchards of America is the San Jose Scale. 



This scale is circular in form, and quite flat. The center is 

 dark and the surrounding color is gray. It is difficult to dis- 

 tingish them from the color of the bark. 



When full grown they are about one-sixteenth of an inch 

 in diameter. 



