THE: SADDLED PROMINENT. ^ 349 



COMBATATIVE MEASURES. 

 ORCHARD AND SHADE TREES. 



For the orchard or shade trees there are several practical 

 measures which have proven successful the past season in pre- 

 venting serious injury from the saddled prominent. 



Spraying. This species is susceptible to arsenical poisons and 

 the caterpillars readily died on apple trees which were thor- 

 oughly sprayed. Arsenate of lead or Paris green will kill these 

 caterpillars and should be applied as soon as they begin appre- 

 ciable work. Applications from the middle to the last of June 

 would probably get all these caterpillars which hatched upon 

 the trees. In case a migration to an orchard from an infested 

 forest growth is feared, the orchard should be sprayed as soon 

 as the caterpillars begin to travel in search of fresh food. If 

 trees not already attacked are banded with a sticky substance, 

 the ascent of caterpillars up the trunk will effectually be 

 prevented. 



Jarring and banding. The saddled prominents are readily 

 shaken from the branches. The writer repeatedly has seen trees 

 effectually cleared in this way for the past two seasons. Small 

 trees can be shaken from the ground. With larger ones a boy 

 can be sent among the branches to shake or give them a sudden 

 jar, a proceeding which should begin with the top, of course. 

 The cool of the morning is the most propitious time for jarring. 



The caterpillars once dislodged, their reclimbing can be pre- 

 vented by banding. The trunks of the trees are protected with 

 a sticky band. A band of tarred paper thickly smeared with 

 equal parts of lard and sulphur has proven helpful in such cases. 

 This mixture should not be applied directly to the bark of the 

 tree as there is danger of injury, but with the tarred paper it is 

 safe and effectual. Tar hardens so quickly that it has not 

 proven satisfactory in several cases where it has been tried this 

 season. 



A material useful in certain phases of the gypsy caterpillar 

 campaign and sold under the name of Tree Tanglefoot has been 

 recommended by this Station during the present seige of sad- 

 dled prominents. "This substance consists principally of resin 

 softened by the admixture of suitable oils. It is quite similar 

 to that used in the manufacture of adhesive fly-paper, seems to 



