New YorRK AGRICULTURAL EXPERIMENT STATION. 353 
Lot 2. TEMPERATURE 100° F. 
ONLY TOPS DIPPED, 
May 22. Conditions as above. . 
June 5. Conditions as above. 
July 5. Trees normal. 
TOPS AND ROOTS DIPPED. 
May 22. Condition of trees generally as above. 
June 5. Every tree shows signs of decline. 
July 5. Ali trees dead. 
Lot 3. TEMPERATURE 120° F. 
ONLY TOPS DIPPED. 
May 22. Same as preceding. 
June 5. Same as preceding. 
July 5. Trees normal. 
TOPS AND ROOTS DIPPED. 
May 22. All trees show retardation of buds. 
June 5. Trees show evidence of decline, leaves wilting and falling. 
July 5. All trees dead. 
Lor 1. TEMPERATURE 212° F. 
ONLY TOPS DIPPED. 
May 22. Many buds killed. Leaves are very few in number. 
June 5. Tips of branches are dead. Amount of foliage reduced. 
July 5. All trees show evidences of injury by much cracking of bark, 
small growth and less abundant foliage. 
TOPS AND ROOTS DIPPED. 
May 22. Four trees are apparently dead. Many buds have been killed 
Foliage is scanty. Bark is much cracked. 
June 5. All trees in rapid decline. 
July 5. All trees dead. 
Summary of results—— Instantaneous dipping of the tops of trees 
in the sulphur wash at temperatures of 60°, 100° and 120° F. 
caused no appreciable injuries. Complete immersion of the trees, 
including their roots, was in nearly every case attended with the de- 
cline of the plants within three’ weeks of leafing. Of sixty trees 
that were entirely dipped, 57, or 95 per ct. of the number treated, 
died as a result of the roots being wetted by the mixture. The 
dipping of the tops of the trees in boiling preparations destroyed 
many buds and caused much cracking of the bark. Trees wholly 
immersed in the boiling wash were killed. ‘All of the checks, thirty 
in number, lived and made a satisfactory growth. 
I2 
