=10= 
nicotine sulphate can be used to control this species with dilutions as 
weak as 1-1,600 combined with either potash fish oil soap, 2-50, or Bor— 
deaux mixture, 3-4-50. In conclusion he states that "the nicotine Bor— 
deaux combination appears somewhat superior to the nicotine soap one, 
especially against older nymphs." The percentage of kill with dilutions 
of 1-1,600 ranged from 91 to over 98 percent for younger nymphs in the ap— 
plications of April 12, and from 83 to 88 percent for the older nymphs, 
Arad 27. 
Russeted oranges inferior in quality to bright fruit.—-"It has been 
the common belief," states W. W. Yothers, Orlando, Fla., "that russeted 
fruit is sweeter and better than bright fruit." An experiment conducted 
in March by Mr. Yothers, with the assistance of Ralph L. Miller and Mrs. 
Ione Pope Bassett, was reported as follows: "Two samples of 45 fruits each 
were chosen, one being all bright, sprayed (with lime-sulphur solution) 
fruit, and the other as nearly totally russeted by citrus rust mites 
(Phyllocoptes oleivorus Ashm.) as possible. Each fruit was measured, 
weighed, and a sample lot of similar fruit was taken for analyses of 
acid and solids at the same time. At intervals of 5 days the fruit was 
weighed and analyses were made of acid and soluble solids. * * * This 
experiment has shown that russeted fruit is small, contains more acid, 
about the same quantity of soluble solids, and has a ratio of from 1 to 
2 points lower than bright fruit. It loses weight almost twice as fast 
as does the bright fruit up to 30 days." In April the experiment was 
repeated: "Three samples of 50 fruits each were chosen, one of bright 
oranges, one of commercial russets, and the other of black russets. Each 
fruit was measured and weighed and an analysis was made at the beginning 
of a comparable sample. At 5-day intervals the fruits were weighed indi- 
vidually and at 10-day intervals 5 fruits for each group were analyzed 
for acid and soluble solids. * * * As in the previous experiment, the 
russeted fruit lost weight twice as fast as the bright and was of much 
inferior quality. tt had more acid and less solids than the bright 
rust.) 
improvements in methods and equipment for treating codling moth 
bands.--E. H. Siegler and Francis Munger, of the Takoma Park, Md., lab— 
oratory, have been giving further attention to improvement in the meth— 
ods recommended for treating codling moth bands. Means of maintaining 
the beta-naphthol-—oil mixture at a constant high temperature for the 
dipping purposes have been worked out. This is accomplished by the use 
of a bath of calcium chloride solution surrounding the chemical soly— 
tion, rendering unnecessary the close regulation of the fire. At #ie 
instance of M. P, Jones, of the extension service of the Bureau, a new 
type of device for dipping the bands has been worked out. The device is 
inexpensive and readily made and appears to be entirely satisfactory. 
Those interested may obtain details from Mr. Siegler. 
ay f . a 
