300 REporT OF THE DEPARTMENT OF ENTOMOLOGY OF THE 
ROOTS ONLY. 
May 22. Three trees in leaf. Remainder are much retarded. 
June 4. All trees are showing small leaves and dead stubs. 
July 5. Three trees are dead and 7 trees show fair growth. 
ENTIRE TREES. 
May 22. Two trees in leaf. Remainder are much retarded. 
June 4. All leaves are small and some are wilting. 
July 5. Four trees are dead and 6trees show fair growth. 
Summary of results — The Mann apples, which were taken from 
cold storage, did not sustain quite as severe injuries as Ben Davis 
apples, removed directly from the field, as described in preceding 
experiments. Of 188 trees that had the roots treated with the sul- 
phur wash, 48 trees, or 26 per ct. of the trees dipped, were killed. 
The trees that had their tops only treated showed no appreciable in- 
juries by instantaneous immersion or dipping from one to three 
minutes. The trees that were dipped for ten minutes showed re- 
tardation of buds and small losses in foliage. The checks made a 
good growth and there were no apparent injuries to any of the 
trees. 
EXPERIMENT X. 
BARTLETT PEARS DIPPED IN SULPHUR WASH FOR DIFFERENT TIME 
PERIODS. 
This experiment was conducted in the same manner as the one 
preceding. The stock consisted of 290 3-year old Bartletts taken 
from cold storage. The details of the dipping operations are the 
Same as in experiment No. IX. 
Results on trees—In Lot VI, of which the tops of the trees 
were immersed for ten minutes, slight injuries to the buds were 
apparent. On June 7, the number of the leaves appeared to be 
reduced. Quite a number of sprouts were growing out from the 
sides of the trunk, just below the treated area, at the bases of the 
lower branches. These trees showed very little improvement by July 
5. Ten trees with the roots only dipped in the sulphur wash were 
also injured and made very little growth. Many of the pruned 
branches appeared as dead stubs. The trees in the remaining lots 
were not affected by the treatments and with some exceptions all 
made normal growth. On the whole, pears sustained very little 
injury as compared with apples similarly treated. 
