83 
kerosene in mechanical mixture with water shortly before the freeze 
showed no live scales at all. On untreated trees, where the scales were 
heavily crusted over the trunk and limbs, an occasional live scale could 
be found. At Danville, Ga., on March 14 I examined an orchard of 
20,000 peach trees previously badly infested with the San Jose scale, 
so badly, in fact, that several thousand trees had been killed outright. 
This orchard had never been treated. A thorough examination of 
infested trees showed a very small percentage of scales living. An 
orchard of 10,000 peach trees in the same locality sprayed with 25 per 
cent kerosene mixture in January and February showed a much 
smaller per centage of living scales; indeed, it was only with very 
careful search that a few living specimens were found. 
The Tifton section was one of the first of the State to become infested. 
Radiating from Tifton as a center, the scale has thoroughly spread 
over three adjoining counties—Berrien, Worth, and Irwin—involving 
orchards of 5,000 to 50,000 peach and plum trees. It has been impos- 
sible to have all of these orchards treated, and ample opportunity was 
afforded to note the effects of the freeze on the scale in this section. 
No official record of the temperature was made at Tifton, but local 
thermometers ranged from 0° to —2° I*. during the freeze. This section 
was inspected March 29-31, and a much larger per cent of the scales 
found living than in any of the other sections noted. The effects of 
the freeze, however, were very apparent: Infested orchards in other 
sections were examined, showing about the same general condition of 
the scale as given in the cases above cited. Many of these orchards 
were reexamined from time to time during the summer up to as late as 
Augustl. The scale has made very little progress this season. Repro- 
duction has been slow. Where trees were creeping with young scale 
insects last year, only a few can be observed this season. Orchards 
that looked as though they were beyond recovery last season have taken 
on new growth and are vigorous again. Making a rough estimate, I 
would say that about 90 per cent of the San Jose scale in infested 
orchards in Georgia were killed by the February freeze. Most of our 
growers, however, understand that the small percentage which escaped 
the freeze is sufficient to thoroughly reinfest their orchards, if left 
unmolested. They, therefore, have not claimed a victory and given up 
the fight so vigorously begun, but have taken new courage and are 
striking while the scale is at its weakest. 
Under conditions existing in the North, the San Jose scale lives 
through the winter at a much lower temperature than was reached in 
Georgia last February. This freezing out of the scale in Georgia, while 
the same insect withstands the greater cold of more northern latitudes, 
may be explained by the fact that the scales had been awakened from 
their winter hibernation by a few warm days that occurred just previous 
to the freeze. Even a few young scales were issuing from specimens 
received from Cairo, Ga., during the warm days. Caught in this sem1- 
