984 NEW YORK STATE MUSEUM 



May II. Trees 84 and 85 arc blossoming pretty fully and the leaves 

 have started well. The leaves are nearly unfolded on tree 106 and there 

 appear to be few blossoms. The leaves are just starting on tree 1 15. 



May 14. The abundant blossoms are out on tree 84, and they have 

 started well on tree 85. The rather abundant foliage is pretty well 

 developed on tree 106 and the blossoms are somewhat abundant. The 

 rather scattering leaves on tree 115 are pretty well out. This last tree 

 was rather badly infested at the beginning of the experiment. 



July 2. No living young scales were found on trees 84 and 106 and 

 but very few on trees 85 and 115. 



Aug. 3. There were no living young scales to be found on trees 84, 85 

 and 106, and but very few could be found on tree 115. 



Sep. 7. Very few living young scales were found on trees 84 and 115, 

 and but few on trees 85 and 106. 



J ounce of cyanid to 100 cubic feet. Four trees were treated with gas, 

 using I ounce of cyanid potassium to 100 cubic feet of space. The con- 

 dition of the trees prior to the beginning of the experiment was as fol- 

 lows. Trees 82 and 83, globe peach 13 feet high, were both badly in- 

 fested with the San Jose scale. Trees 104 and 105, Bartlett pear about 

 12 feet high, were moderately infested with the scale. 



Ap. 20. The day was bright while the trees were being fumigated. 

 The buds of all were starting a little. Tree 82 was subjected to the 

 action of the gas from 11.58 a. m. to 12.33 P- "^- Tree 83 from 1.45- 

 2.20 p. m., tree 104 from 9.27-10.03 a. m., and tree 105 from 12.55-1.30 

 p. m. Efjual quantities of cyanid and sulfuric acid and thrice the 

 amount of water were used. 



May II. Trees 82 and ^-^ show that they will be pretty well supplied 

 with blossoms, and the leaves are starting well. The blossoms are few 

 on trees 104 and 105 and the leaves have not unfolded entirely. 



May 14. The leaves and blossoms of trees 82 and 83 are starting well, 

 the latter being abundant. The leaves are pretty well developed and 

 abundant on trees 104 and 105, though blossoms are somewhat scarce. 



July 2. No living young scales were found on trees 82,83 ^^^ '^S ^"cl 

 very few on tree 104. 



Aug. 3. No living young scales were found on any of these trees. 



Sep. 7. No living young were found on trees 82 and 104 and very few 

 on trees %}^ and 105. 



I ounce of cyanid to 75 cubic feet. Four trees were treated with gas, 

 using I ounce of cyanid of potassium to 75 cubic feet of space. The con- 

 dition of the trees prior to the experiment was as follows : Trees 80 and 



