46 



$16.73 for the hire of a horse a total of $72.03, or an average of 

 somewhat less than five cents a tree.* The results reported can- 

 not be readily summarized and are consequently given in detail for 

 several typical lots of trees. 



No. 1. One hundred and fifteen apple-, pear-, and peach-trees, 

 most of them large and old, treated with 20 per cent, emulsion 

 January 26 29 and February 1, l')()0, on the premises of Mr. G. T. 

 Hoke — two town lots and an old orchard near by. October 8, 1900, 

 a few living- scales were found on some of the peach-trees that had 

 been sprayed. March 11, 1902^ the trees on the town lots were 

 slightly infested, and a few scales were found on some of the 

 orchard trees. 



No. 2. Nine trees on a town lot belonging to Mr. K. Mark 

 were treated February 1, 1900. March 11, 1902, 5 of the 9 trees 

 were slightly infested. 



No. 3. Twenty infested trees varying from medium to large 

 belonging to Mr. Charles Miller were sprayed February 1 and 2, 

 1900, and March 11, 1902, scales were found on only one of these 

 trees. 



No. 4. Twelve badly infested peach-trees, small to medium 

 in size, sprayed February 3, 1900, were found generally infested, 

 but not heavily so, on March 22, 1902. 



No. 5. Of 36 infested peach-trees belonging to Mr. John Gay, 

 treated February 23, 1900, 20 were found infested March 3, 1902. 



No. 6. February 3-6, 1900, 4 infested trees on a town lot be- 

 longing to Mr. N. F. Tate, and a large pear-tree also infested on 

 another lot, were sprayed with 20 per cent, emulsion. A large apple- 

 tree was destroyed at this time as practically worthless from the 

 abundance of the scale. Two years later, March 13, 1902, all 5 

 of the trees sprayed were slightly infested, as were also sprouts 

 from the root of the apple-tree destroyed. 



No. 7. February (>, 1900, 12 orchard trees belonging to Mr. 

 C. P. Cooper were sprayed, and March 12, l'^>02, two years later, the 

 scale was found on 2 of these trees. 



No. 8. Three large peach-trees in an orchard of Mrs. M. A. 

 Robins were sprayed February 6, 1900, and March 17, 1902, two 

 years later, 2 of the 3 were slightly infested. 



Similar data are given for seven other premises, all pointing to 



*The a\'erage cost of spraying 5,710 trees, from Jamiary, igoo, lo January, 

 iQOi, at five different localities was 4K cents a tree. Tfie premises treated were 

 mainly town lots, requiring frequent interruption of operations and consequently 

 increased expense. In three orciiards near Barry 1,486 trees were sprayed, 

 and at a cost of 3.2 cents per tree. 



