REPORT OF THE STATE ENTOMOLOGIST 1901 765 
trees appear to have been in a very good condition, except where 
dead twigs are recorded in the following notes, and this is more 
jikely due to injury by the San José scale or winterkilling from 
some other cause, than from the application of insecticides, 
either this or the previous year; since it is about as common 
on trees treated with whale oil soap as on those sprayed with 
crude petroleum. 
Standard oil, 20¢ mechanical emulsion. 11 trees were treated 
with this combination. They are as follows: tree 115 a Bartlett 
and trees 24, 110 and 111, Kieffer pear; tree 25, a beurre bosc; 
trees 7) and 71, respeetively Clapp’s favorite and beurre d’Anjou 
pears; trees 43, 44, 88 and 89, old Mixon peach. The condition of 
these trees was as follows toward the elose of the growing sea- 
son, Sep. 7,1900. ‘here were very few or no young scale insects 
on trees 24 and 115; no living young were found at that time on 
tree 111, very few on tree 110, but few on trees 25, 43 and 44; 
living young were very abundant on trees 70, 71 and 88, specially 
‘on tree 71, and they were extremely abundant on tree 89. 
The first observations, made after the spraying of Ap. 11, were 
on May 22, when only those trees presenting something out of 
the ordinary received special attention. Tree 71 had then only 
one vigorous shoot, and tree 88 had been cut down to a five foot 
Stump, from which a few buds were breaking forth. 
July 3, a date which was late enough to permit a fair judgment 
of the numbers of living scale insects, through the abundance of 
the young, the conditions were as follows. There were few or 
no young on trees 24, 25, 43, 88, 110, 111 and 115; young were 
rather few on tree 44 and few on trees 70, 71 and 89. ‘The fol- 
lowing additional notes were made at this time regarding the 
condition of certain of the trees. The new shoots on tree 25 were 
vigorous, and the cluster of shoots on tree 88 were short and 
vigorous. The bark of tree 70 was very rough. 
Aug. 9 very few or no young scale insects were to be found on 
any of these trees. The shoots on tree 88 were growing very 
fast. 
