362 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 1 4 



Lot No. 7. Soluble pine tar diluted one part to twenty-five parts of water. This 

 did not spread quite as well as Lot No. 6 on the new leaves. 



At the time jf spraying, the adults were just beginning to emerge, 

 probably less than 1% being out. An examination on May 21st showed 

 that lots 1 t3 5 inclusive, gave excellent results, entangling most of the 

 adults as they emerged. Lot No. 1 gave slightly better results than 

 the others. The extract of pyrethrum and pyr^tbrum dust in lots 

 Nos. 3 and 4 did not kill any of the adults as they em.erged, wnile lot 

 No. 5, dusted with tobac3 3, killed most of the adults before they emerged 

 completely and entangled the remainder. Lots Nos. 6 and 7, sprayed 

 with the soluble pine tar, killed and entangled a few of the adults as 

 they em.erged but caused considerable burning. 



Spraying With Molasses to Entangle the Adults 



At the time tiie examination of the preliminary experiments was made 

 the adults were beginning to emerge quite rapidly, about 10% being 

 out, so arrangem.ents were made to spray the entire hedge of about 175 

 yards with mjlasses on the next day. May 22nd. An unsprayed hedge 

 on a nearby estate was used as a check. Black sjrghum molasses di- 

 luted one part to three parts of water was used. This strength was 

 used as the weaker dilutions did not spread well upon the new leaves 

 and enough more spray material was used to make up for the greater 

 dilution. It took 23 gallons of syrup, costing 50 cents a galljn tj spray 

 the hedge. Before spraying, many adults were observed flying and 

 ovipositing. After spraying only a few unentangled adults could be 

 found. 



The sprayed hedge was examined on May 26th, at whi.:h time the 

 adults were emerging in the greatest nirnibers. Very few adults were 

 observed flying while many were stuck in the m.olasses on the leaves. 

 A count of a ntimber of sprayed twigs gave the following results: A- 

 dults emerged 652, adults entangled 557, number of leaves examined 

 280, number of eggs found 591, average number of eggs Der leaf 2.1—, 

 or slightly less than ore egg for each adult emerging. 



In the check secured by examining twigs of the same degree of in- 

 festation from an adjoining estate, 233 leaves were examined and 2351 

 eggs found or an average of 10". Based on the average egg infe.'^tation 

 in treated and check leaves, there is an apparent control of 79%. 



The entire hedge was resprayed the afternoon of the 26th using the 

 same dilution as before. Twenty gallons of syrup were used for the 



