49 
Mr. Southwick having invited the members of the Association to 
inspect his spraying outfit in Central Park, it was voted to accept his 
invitation and to visit the park, for the purpose mentioned, at 1 p. m. 
on June 23. ; 
The next paper was presented by Mr. Scott: 
NOTES ON COCCIDZ OF GEORGIA. 
By W. M. Scorr, Atlanta, Ga. 
Since March, 1898, the writer has worked the State of Georgia over 
with the secondary purpose of making a collection of the scale insects 
occurring within the bounds of the State, and the following is a list of 
the collected species, with brief notes on their habits. 
(1) Aspidiotus perniciosus Comst. 
This, the San Jose scale, is without question the most important 
species, economically, that occurs in the State, and there are perhaps 
more trees infested with it here than in any other State in the Union. 
Our records show 200 cases of this scale (principally commercial orch- 
ards), involving over a half million trees (peaches and plums). This 
does not include the garden and wayside cases, of which there are 
hundreds in some of the lower counties. These cases are distributed 
over 32 counties, principally in the southern part of the State, only 
5 counties north of Macon having been found infested. Its food 
plants in Georgia are recorded as peach, plum, apple, pear, Prunus 
pissardii, rose, grape, pecan, Kilmornock willow, cottonwood, and 
Carolina poplar. Robinson and wild-goose plums and LeConte and 
Kieffer pears do not seem to be congenial host plants for this insect. 
These varieties, growing in the same orchards with other varieties 
that were badly infested for several years, never developed more than 
a slight infestation. In the treatment of this pest we are using 20 per 
cent kerosene in mechanical mixture with water on orchard trees with 
satisfactory results, and hydrocyanic-acid gas applied to nursery stock. 
Last February and March the writer made extensive experiments 
with the use of crude petroleum as a remedy for this scale, proving 
that 25 per cent of the crude oil gives even more satisfactory results 
than the refined kerosene. The scales were killed when the substance 
was thoroughly applied and no damage resulted to the trees (peaches 
and plums). The pure crude petroleum killed peach trees, while 50 
per cent and less did no damage. 
(2) Aspidiotus forbest Johnson. 
This seale insect is generally distributed over the State, particularly 
throughout middle and south Georgia. There is hardly a bearing 
peach or plum orchard in the State entirely free from it and in a num- 
6878—No, 26 4 
