April, '11] metcalf: euonymus scale 261 



emulsion as well as the seven large clumps on the lawn which had 

 received only two sprayings previously. 



The entire hedge was examined carefully, on September 9 the un- 

 sprayed portions were practically all dead. The portions sprayed 

 showed varying degrees of infestation, from almost perfectly clean 

 hedge to that which had been but slightly benefited. Taking into 

 consideration the relative original infestation one was able to judge 

 very accurately the relative merits of the different solutions used, as 

 well as the benefits to be derived from sprayings applied at different 

 seasons of the year. ^ As far as we were able to judge there was very 

 little difference between winter applications of strong solutions and 

 summer applications of the same solutions used at weaker strengths. 

 The best results seemed to be obtained by making one application of 

 the stronger solution in the winter time and two of the weaker in the 

 summer time until the scale is under control. After the scale is once 

 thoroughly under control, we belieye it can be held in check by one 

 summer or one winter spraying each year, using either a soluble oil 

 or kerosene emulsion. Our results would lead us to believe that early 

 March', early June and early August are desirable times to make these 

 sprayings under the climatic conditions of North Carolina. 



Of the three materials tried, scalecide, 1 to 10 in winter and 1 to 25 

 in summer, would rank the highest. Next to this we would place 

 kerosene emulsion, 60 per cent in winter and 30 per cent in summer. 

 Either one of these materials seems to be an effective remedy for the 

 euonymus scale. Our experience goes to show that these strengths 

 may be used without any danger of injuring the plant. Commercial 

 lime-sulphur did not prove to be an effective remedy in any of the 

 strengths used. Although the hedge sprayed with commercial lime- 

 sulphur showed decided improvement over no spraying at all. 



Not the least important fact derived from these experiments to our 

 mind, is that spray mixtures to be effective against this scale must be 

 used at a much greater strength than heretofore recommended. 



Brown-Tail Moth in Connecticut (Euproctis chrysorrhoea Fabr.). — The brown-tail 

 moth was discovered in Thompson, Conn., in April, 1910, and later in Putnam. 

 At Thompson several fruit trees found to be infested were sprayed with lead arsenate 

 during May, and at the present time very few nests are found in that locality. The 

 infestation at Putnam was discovered too late for sprajang, and the nests were quite 

 abundant on fruit trees in the city back yards. Scattering nests were found on trees 

 three miles to the eastward, near the Rhode Island line. Local parties cut off and 

 burned about five bushels of nests in Putnam, and later our state scouts went over 

 the ground thoroughly and destroyed about 2,000 nests. The scouts are still working 

 in Thompson at this writing, and though it is too early to generalize, it is probable 

 that this infestation in the extreme northeast corner of Connecticut is the edge of 

 the infested region extending through Massachusetts and Rhode Island, which has 

 been close to the Connecticut line for at least two years. W. E. Britton. 



