40 



Compound, 1 part; water, 18 parts ; 9 J gallons diluent; examined 5 

 days after. X early all the insects dead to 14 inches in depth, but most of 

 the eggs looked bright yellow and no doubt will hatch. Behind the 

 thick bark near the top, where apparently the solution did not penetrate. 

 a number of young lice were found alive. 



Compound, 1 part; water, 20 parts; 10J gallons diluent; in holes 

 4 feet in diameter. An examination 5 days later showed the fluid 

 had penetrated the ground on plants 15J or 20 inches from original 

 surface. All the insects were destroyed 13 inches in depth and but 

 very few living 3 inches deeper. This solution seems to work best of all 

 this series, but it is doubtful if the eggs will be affected by it. 



C03IPOUXD Xo. 2. — Caustic soda, 98 per cent., 1 pound; resin, 10 pounds-. 

 water to make 12J gallons; compound costing 25 cents. 



Compound, 4 pints; water, 4 pints; in hole 4 feet in diameter; 5 

 gallons of water added 1 hour later and the same quantity next day. 

 Very few dead insects were found upon this plant, and none living. 

 Not sufficient to show proper result. 



Compound, 4 pints; water, 2 gallons; 5 gallons of water added 1 hour 

 after and 5 gallons the following day. Examined plants 7 days later, 

 result very satisfactory, hardly any living phylloxera as far as the fluid 

 reached. After examination 5 gallons more water were added and 

 again examined a week later, when no living insects could be found to 

 a depth of 18 inches. 



Compound, 4 pints ; water, 10 gallons. Destroyed insects to about S 

 inches in depth and but few below this. 



Holes only 2 feet in diameter; 5 gallons of water in same first, and 

 solution 1 hour later in the four succeeding experiments. 



Compound, 4 pints ; water, 4J gallons ; examined 13 days later. De- 

 stroyed insects and eggs as well, which had become very dark. Occa- 

 sionally a live specimen running about. 



Compound, 3 pints ; water, 4£ gallons. Examined 13 days later and 

 found all insects dead that had been reached. 



Compound, 2J pints ; water, 37^ pints. Examined 13 days later. A 

 piece of root about 10 inches deep one-half inch in diameter by 6 inches 

 long and completely covered with phylloxera showed but one single 

 living young, probably hatched from egg after application. 



Compound, 2 pints; water, 4J gallons ; also examined at the end of 

 13 days. All insects to 8 inches below ground or 14 inches below orig- 

 inal surface were destroyed, as well as a large part of the eggs. Oc- 

 casionally a living young was found wandering about. 



Four other experiments were made with this compound, using 1, 2, 3, 

 and 4 pints in 20 of the solution, the ground having 4 hours previously 

 been saturated with 5 gallons of water in each case. Examined 12 days 

 after; results were not good with 1 pint but were progressively better 

 with the other three. Applied 4 gallons more water on plants where 3 



