380 Report OF THE DEPARTMENT OF ENTOMOLOGY OF THE 
soda was then used, with water as needed, and the whole mixture 
was kept thoroughly stirred. As soon as the chemical action 
had ceased the required amount of water was added, when the 
mixture was ready for use. The soda used in the preparation of 
this wash is a powdered 74 per ct. caustic soda, sold by the Penn 
Chemical Works, 13822 Washington Avenue, Philadelphia, Pa. 
It sells for 4 cents a pound and is contained in 50 Ib. cans. 
BorLtep LIME-SULPHUR-CAUSTIC SopA WASH. 
DTTP ET ae Oe cand soit Sao eA 1S tae Be tw ws “0 40 ha Bae banda ae te Ue Ip es ee ee ee ee 30 pounds. 
BSL EGS TUNIS cets isda pcteen kT 4 sin Gin Rai aretin eae SO altace ale alts Oa tes ie See 15 - 
CATIBETG BOMB gates pitta Linus end dipepel ig aa OF Regie boeke wed Ga eet ee 6 cf 
WHALEY 6 sa pur dss «to 2 cutee «bitty eas ain as GopLeiaie ta elgg oo 50 gallons. 
This was prepared in the same manner as the self-boiled lime- 
sulphur-caustic soda wash, after which the mixture was boiled 
for one or two hours over a fire. 
RESULTS. 
Orchard I: Peaches.—In the early spring with the opening of 
the buds the blossoms and leaves appeared normal and no differ- 
ence could be seen between the check and treated trees. Subse- 
quent examinations, made on May 22, June 14 and July 24, 
showed no apparent variation. On August 15 the foliage of the’ 
treated trees appeared better than that of the unsprayed trees. 
With respect to the fruit yields there was no difference. In 
every case the fruit was small and of poor quality. 
Plums.—Buds on the check trees opened May 9, while those on 
the sprayed plums were retarded for nearly a week. At this time 
the untreated trees had uniformly more foliage, but observations 
made on May 12, 22, June 14 and July 24 showed very little dif- 
ference in this respect. On Aug. 15 the checks had begun to drop 
the foliage owing to the attacks of the shot-hole fungus (Oylin- 
drosporium padi Warst.) but this defoliation did not affect the 
fruit yield, which was very satisfactory in quantity and quality. 
Orchard II: Apples.—A variation in the action of the washes 
was noticeable when the blossoms appeared which was apparent 
on some trees in all the rows receiving treatment. With the 
advancement of summer there was a more abundant growth on 
the sprayed trees, which appeared to be more vigorous than the 
checks. 
