144 REPORT OF THE COMMISSIONER OF AGRICULTURE. 
Eaperiment 166.—Kerosene emulsion 165. 
One part emulsion to 20 parts of water. Applied July 27. Destroyed but few of 
the young scales; tree full of newly-formed scales August 19. 
Eaperiment 167.—Kerosene emulsion. 
Made of kerosene, 2 parts; resin compound, 1 part. Prepared cold by working 
with pump for 2 minutes. This will make a good emulsion, but separates sooner 
than 165. 
One part of the emulsion to 8 parts of water were applied August 4 on lemon 
tree full of Lecanium hesperidum. About three-fourths of the scales were destroyed, 
and they were soon on the increase again. 
Experiment 169.—Kerosene emulsion 167. 
One part of the emulsion to 5 parts of water. Applied August 27, on Aspidiotus 
sp., on Currant, A. rapaxw and Mytilaspis pomorum on Apple, which was also badly 
infested with Wooly Aphis (Schizoneura lanigera) and Red Spider. This destroyed 
only about half of the scales on Currant (which are exceedingly hard to kill), and 
where well protected the effects were not visible. Result on A. rapax on Apple 
much better, but not all died. Of Mf. pomoruwm only young scales were destroyed. 
Wooly Aphis and Red Spicer were killed, but the eggs of the latter were not affected. 
Not the slightest injury to plants visible. 
Experiment 170.—Kerosene emulsion 167. 
One part of the emulsion to 10 parts of water. Applied August 27, on Aspidiotus 
sp., on Currant, A rapax on Apple and Cherry. 
September 1, about one-third of the scales dead on Currant; found many dead 
young and eggs under mother scales; plant full of newly-hatched young. Of A. 
rapax, on Apple and Cherry, all scales dead except an occasional one under mother 
scale; a few gravid females living. October 7, only a small number of scales living 
on Apple and Cherry, but numerous on Currant. Plant not at all injured. 
Experiment 171.—Kerosene emulsion 167. 
Emulsion, 1 pari; water, 15 parts. Applied August 27, on Aspidiotus sp., on Cur- 
rant and A. rapax on Cherry. This scarcely affected the scaies. 
Experiment 172.—Kerosene emulsion 165. 
Emulsion, 1 part; water,4 parts. Applied August 27, on Aspidiotus sp., on Cur- 
rant and A. rapax on Plum in bearing. September 1, about four-fifths of the scales 
on Currant dead, and none living could be found on Plum. Plants show no trace 
of wash. October 7, scales on Currant increasing; found one living on upper branch 
of Plum. November 28, scales very numerous on Currant again. 
Faperiment 173.—Kerosene emulsion 165. 
Emulsion, 1 part; water, 9 parts. Applied August 27, on Aspidiotus sp., on Cur- 
rant, and A. rapax on Peach. September 1, scales and eggs, where not weil pro- 
tected, all dead on Currant; on Peach about four-fifths destroyed. This tree was 
covered with red spiders, nearly all of which were destroyed by this wash. Oc- 
tober 7, scales increasing on both plants. November 28, scales numerous again, but 
more so on Currant. 
Experiment 174.—Kerosene emulsion 165. 
Emulsion, 1 part; water, 12 parts. Applied August 27, on Aspidiotus sp.,on Cur- 
rant. The result was nearly as good as in 178. 
Eaperiment 188.—Kerosene emulsion 167. 
This emulsion was prepared with -hot resin compound and could not be united 
properly ; part of freeoil floating on top. One-half emulsion to one-half water. 
Applied September 13, on a strong young apple tree in bearing ; also on Cherry. 
September 21, allthe fruit on Apple spotted; leaves on sunny side partly burned; 
eggs of M. pomorum not affected, nor eggs of red spider; tips of leaves on Cherry 
black on south side; otherwise no injury to this tree. October 7, apple tree in 
good condition; some of the leaves on south side partly dry; wash on Cherry not 
visible; no injury was done here. November 22, apple tree had made few new 
growths on one branch and had bloomed on this part; eggs of MZ. pomorwm not yet 
hatched; allin good condition. 
