68 
of the spray than were the larger branches and the trunk, and the 
greater part of the Hving scales were found on such twigs. They 
were, as before, more abundant on the apple than on the peach. 
September 5 the average infestation of the 78 trees available for 
comparison was figured at 2.9 degrees, which, compared with the 
4.9 of the check plot, gives a benefit of 42 per cent, from this Janu- 
ary treatment with the "Oregon wash." As compared with its 
own January condition, this plot had been improved by 12 per cent, 
10. A January spray of a lime and sulphur mixture made with 
soda — 30 pounds of lime, 15 of sulphur, and 5 of soda, to 50 gallons 
of water. The mixture was prepared January 4 as follows : 
Thirty pounds of Marblehead lime was slaked in 12 gallons of 
water, the sulphur being added in the form of a paste during the 
slaking process. The soda was added in three lots, the first about 
5 minutes after the lime began to slake, and the others at intervals 
of 2 or 3 minutes. The mixture was then stirred for 10 minutes, 
diluted with cold water to make 50 gallons, no boiling being neces- 
sary, and applied to 127 trees in Orchard I. — a plot of eight rows 
immediately beside the check. The temperature was a little above 
or a little below freezing, a strong wind blowing from the south. 
There was no appearance of any increased infestation on the side 
nearest the check plot, and the averages for all these rows are conse- 
quently used for comparison. 
May 27, scales were quite numerous on this plot, including both 
well-grown females and some young. Of 676 examined, 30 per 
cent, were found alive. On the check plot at the same time, of 1200 
scales examined, 39 per cent, were alive. September 5, when the in- 
festation of this plot was finally graded, it was found to average 
3.37 degrees, less by some 23 per cent, than the infestation of the 
check plot in this orchard. Compared with its own January condi- 
tion, the September infestation was estimated at practically 15 per 
cent. less. 
11. This, like the preceding, is a lime, sulphur, and soda mix- 
ture, differing in the smaller proportions of lime and sulphur and in 
the greater amount of soda. Sixteen pounds of lime and 8 each of 
sulphur and soda were used to 50 gallons of water. In the prepara- 
tion of this solution 8 pounds of sulphur paste was put into a few 
gallons of boiling-hot water, 8 pounds of caustic soda was added 
to this and stirred until the sulphur was dissolved, and 16 pounds 
of lump-lime was then put in and stirred until completely slaked. 
The entire process required about 15 minutes' work. 
The spray was applied January 5 in Orchard I. to 124 trees, 
about equally peach and apple, the temperature varying from 32° to 
