REPORT OF THE STATE ENTOMOLOGIST 1901 T71 
with this compound. They are as follows: trees 18 and 63 are 
an early unnamed pear; trees 19, 64, 65, 104 and 105 are Bart- 
detts; tree 103 is an Idaho pear; trees 36, 37, 81 and 82 are globe 
peach. The condition of these trees near the end of the grow- 
ing season, Sep. 7, 1900, was as follows: there were very few 
or no young scale insects on trees 18, 19, 82 and 104, very few 
on trees 63, 81 and 105, few on tree 103; they were abundant on 
tree 36, and very abundant on trees 387, 64 and 65. 
May 22 it was seen that many of the tips of the smaller limbs 
on tree 37 had been winterkilled, and that tree 82 had suffered 
in this way to some extent. 
July 3, there were very few or no young scale insects on trees 
36, 81, 82, 103, 104 and 105, few on trees 18, 19, 37, 63 and 65; 
and they were rather abundant on tree 64, which has a rough 
bark. . 
Aug. 9, there were few or no young on trees 18, 36, 87, 63, 81, 
82, 103 and 104, few on trees 19, 64 and 105, and they were 
rather few on tree 65. 
Sep. 25, there were very few or no living scale insects on 
trees 63, 64, 65, 81, 104 and 105, very few on trees 18, 19 and 103, 
and but few on trees 36, 37 and 82. 
The record for this substance is very good. Three of tne trees | 
having very few living scale insects on them at the end of the 
season were on the edges of the experimental orchard, where 
they could easily have become reinfested. Living scale insects 
were abundant and very abundant, respectively, on trees 36 and 
31, while tree 82 was very badly infested in the spring of 1900, 
and, though very few were found on it at the end of that season, 
some might easily have escaped the second treatment under the 
shelter of old scales. 
Good’s whale oil soap no. 3 and 15% petroleum. The Standard oil 
was used in these experiments. This combination was tested 
on 15 trees. They are as follows. Trees 15, 16, 60, 61 and 101 
are seckel; trees 17 and 62, an early unnamed variety, and tree 
102, a beurre bose pear. Trees 34,35, 79 and 80 are globe peach 
trees; tree 34a, a natural sprout. Their condition near the end 
