ENTOMOLOGY. 1065 



indicate that this treatment increases the fruit crop to an extent which 

 warrants the fruit grower in spending the necessary time and money 

 for making- the applications. On the Rambo apple trees the yield 

 of fruit was increased 18.3 per cent, and on the Beauty of Kent 62 

 per cent. 



Experiments for checking tlie attacks of the codling moth show 

 that 12 oz. of Laurel green to the 100 gal. of Bordeaux mixture had 

 little, if any, effect upon the number of the codling moth. A single 

 application of 5 oz. of Paris green to 50 gal. of the Bordeaux mixture 

 reduced the injury from the codling moth to a considera])le extent. 

 In this connection, brief notes are also given on the use of arsenate 

 of lead. 



Experiments were tried in using a combination of Bordeaux mixture 

 and kerosene, containing 10 to 15 per cent of the latter. The appli- 

 cation was made to pears, apples, and plums on April 20 and May 

 12. No injury to the foliage resulted, and the apple aphis seemed 

 to be entirely destroyed by l)oth the 10 and 15 per cent kerosene 

 combinations. 



The author tested the possibility of making Bordeaux mixture by 

 mechanical methods. Two lbs. of copper sulphate were dissolved in 

 4 gal. of water, and 2 lbs. of lime in 12 gal. of water. The copper 

 sulphate solution was placed in an oil tank and the limewater in the 

 barrel of a Kerowatcr pump. The pump was set to make a 25 per 

 cent mixture, and thus the lime and copper sulphate were delivered 

 in equal quantities in the nozzle. The only advantage of this method 

 is the lessened liabilit}' to clog the pump and nozzle. 



A test was made of a combination of tobacco and kerosene emulsion 

 as a remedy for rose bugs. The mixture was made by combining the 

 Riley kerosene emulsion with 2 gal. of tobacco tea. This spray was 

 applied to peach trees without damage to the foliage. Little effect 

 was shown on the rose bugs, since the}" are of a migratory nature and 

 difficult to combat. 



The author gives a brief description of the appearance of the San 

 Jose scale. Notes are also presented on the spread of this insect in 

 West Virginia. Experiments were tried in combating the San Jos6 

 scale with whale-oil soap, made b}- dissolving 2 lbs. of soap in a gallon 

 of water, dilute kerosene (150^ test), in a 25 per cent mechanical mix- 

 ture with water, and pure kerosene and crude petroleum in a 20 per 

 cent mixture with water. In preparing these insecticides, it was 

 found that whale-oil soap offered the greatest difficulties. None of 

 the other mixtures require especial preparation. The spraying work 

 was begun on March 28. An inspection of the work on May 16 and 

 on October 12 showed that whale-oil soap had killed a large percent- 

 age of the scales and had caused no injury to the trees. Pure kerosene 

 caused no damage to the foliage and killed the scales on the parts of 



