19 
Result. — About 50 per cent, were killed. A second application on 
the following day was fatal to nearly all of the remainder, and to the 
plant also. 
Experiment 2.— WOLF'S SOAP. 
Solution of 3 ounces soap to 1 gallon of water. Sprayed on aphid s 
on plants. 
Result. — Thoroughly effective. 
IX. — WooLY Apiiids. {Species various.) 
Experiment 1.— WOLF'S SOAP. 
(Species on Tree-Ferns in green-house.) 
Solution of 4 ounces soap to 1 gallon of water. (Temperature normal.) 
Sprayed ou foliage previously wetted; drenched with water soon after 
application of solution. 
Result. — This made no impression on the insects. 
A second application after 24 hours had elapsed from first. 
Result. — Only a small per cent, were destroyed. 
A third application, the foliage not beiug sprinkled with water after 
application of solution, proved fatal to the aphids and killed the entire 
foliage of the plant. 
Experiment 2.— TAR WATER. 
WooLY Aphis of Apple. [ScMzoneura lanigera Hausm.) 
Tar water sprayed on infested branches, August 31. 
Result. — September 2, does not seem to have had the least effect. 
Experiment 3.— SOLUBLE PINOLEUM. 
Species as in Experiment 2. Solution of 5 parts pinoleum to 100 
parts water. Sprayed on branches with atomizer. 
• Result. — On following day, many active lice were observed. Three 
days after, they were abundant, and five days after, were as abundant 
as at first. 
Experiment 4.— SOLUBLE PINOLEUM. 
Species as in Experiments 2 and 3. Solution of 15 parts pinoleum to 
82 parts water. Sprayed ou branches, September 15. 
Result. — Three days after application, none were to be found, and up 
to October 20, none have appeared on these branches. 
Experiment 5. -KEROSENE EMULSION. 
{Glyphina eragrostidis Middleton.) 
An emulsion, composed of equal parts kerosene, molasses, and water, 
was diluted with three times its volume of water. This was sprayed 
on aphids, September 12. 
