312 Report oF THE DEPARTMENT OF ENTOMOLOGY OF THB 
Taste VII.—Yieup or SounD AND Wormy Appies UnpER DIFFERENT TREAT- 
' MENTS IN ORCHARD V.—( Continued.) 














YIELD oF PICKED APPLES, YIELD OF WINDFALLS. 
Number of section 
VARIETY. and tree. 
Treatment. Per Per 
Sound. | Wormy.| Total. | centage | Sound. | Wormy.| Total. | centage 
ind wormy. wormy. 
Section IV. No. No. NO>*) Pertct\" No; No. No. | Per'ct. 
Gano.......-/Block 1. Tree 1 203 58 261 Doren 93 40 133 30.1 
2 259 63 322 19.6 105 36 142 25.4 
Arsenite of soda...3 572 70 642 10.9 172 35 207 16.9 
4 330 58 388 14.9 307 74 384 19.3 
5 811 91 902 10.0 246 56 302 18.5 
Z AVEIRO oo Oetcs Sa recs ioe eh nile recto oar ae ae LDS] s Psvirdee la eee See eee 22.0 
Block 2. Tree 1 89 16 105 15.2 311 60 371 ape 
2 424 37 461 8.0 146 20) : 166 12.0 
Arsenate of lead...3 379 23 402 5.7 25 25 300 8.3 
; 4| - 366 50 416 12.0 215 20 235 8.5 
5 333 38| 371 10.2 97 20 117 17.1 
A VOPR LO ca he bidcctvll stores care Pane ee A ee eee ae 10.2). ere eles hoateee oxen eens 12.4 
Section IV. 
Shackleford..|Block 1. Tree 1 41 34 75 45.3 47 41 188 21.8 
2 88 44 132 30.3 126 72 198 36.4 
Arsenite of soda...3 125 44 169 26:0 34 10 44 2256 
4 145 56 201 27.9 167 93 260 S08 
5 267 75 342 21.9 257 76 333 22.8 
AVEIAUO ccis we eek «tise cicho ed eehtasll este ete BO. Dis Psi scc sc e-ctetswtote ot] eee tee 27.9 
Block 2. Tree 1 43 1] 54 20.4 37 20 57 35.1 
2 65 13) 78 | 16.4 63 29 92 3L.b 
Arsenate of lead...3) - 107 20) 127 15.7 390 72 462 15.6 
4 125 31 156 19.9 76 19 95 20.0 
5 252 44) 296 14.9 229 27 256 10.5 
IAVOTAZO eure Salo eats ca eeloline een 1 0) PPPS (2 IG! oo oe 22.5 
| 
AVERAGE 
Arsenite of sodas... 2. cw oe yA Beg | OI aG 
Arsenate of lear . 5 ase eyes Lics 15.1 
The trees sprayed with the arsenate of lead yielded 9.6 per ct. 
less wormy apples (picked) and 12.5 per ct. less wormy apples 
(windfalls) than those treated with the arsenite of soda. 
ORCHARD VI. (ONTARIO CO.) APPLES. 
These are young apple trees and have been for a number of 
years infested with the oyster-shell bark louse. Three of the 
worst infested trees were sprayed April 26 with the lime-sulphur. 
caustic soda wash to determine the effects of such treatment upon 
the scale. Besides the usual checks, comprising adjacent trees 
similarly infested, additional checks were reserved which consisted 
of untreated portions of the sprayed trees. Before applying the 
