PLANTS INSECTICIDAL PROPERTIES. 37 



Scott, Abbott, and Dudley (83, p. 5, 13, 26) found the leaves in- 

 effective against bedbugs, roaches, and the larvae of clothes moths, 

 and Abbott (1, p. 7, 11) found them ineffective against chicken lice 

 and the dog flea. 



Euonymus americanus L. Celastkaceae. Brook euonymus. Eastern United 

 States. 



Porcher (68, p. 154) says that the seeds are used in some places 

 to destroy vermin in the hair. 



Euonymus atropurpureus Jacq. Wahoo. Eastern United States. 



Porcher (68, p. 154) sa ys that this possesses properties similar 

 to that above. 



Euonymus europaeus L. European burningbush. Europe, adventitious in 

 the United States. 



Lyons (53, p. 188) lists this as an insecticide. 



Eupatorium capillifolium (Lam.) Small. Astebaceae. Dog-fennel. South- 

 eastern United States. 



Roark (75, p. 92) states that Porcher reports this by saying : " It 

 is used to keep off insects and bugs by strewing on the floors of 

 cellars and dairies." 



Eupatorium perfoliatum L. Synonym : E. connatum Michx. Boneset. East- 

 ern United States. 



Riley (71, p. 184-) reports that the powdered leaves seemed obnox- 

 ious to cotton caterpillars, but an infusion from the leaves had no 

 effect on them. 



Eupatorium sp. 



Greshoff (31, p. 93) lists this as an insecticide. 



Euphorbia cotinoides Miquel. Euphokbiaceae. Guiana. 

 The writers' results are given on page 22. 



Euphorbia marginata Pursh. Synonym : Diclirophyllum marginatum Klotzscli 

 & Garcke. Snow-on-the-niountain. Minnesota to Texas. 



Riley (71, p. 186) reports that a decoction was ineffective against 

 cotton caterpillars. 



Euphorbia spp. 



Chesnut (13, p. Jfi7) says : " The juice of E. marginata and E. 

 bicolor is used to some extent in Texas to brand cattle, it being held 

 to be superior to a red-hot iron for that purpose, because screw 

 worms will not infect the fresh scar and the spot heals more readily." 



Sprenger (88) recommends E. biglandulosa and E. dendroides as 

 insecticides in the form of decoctions. 



Goriainov (29) determined that a decoction of spurge (Euphorbia 

 sp.) killed only 38 per cent of the Malacosoma neustria tested. 



Fluggea leucopyrus Willd. Euphokbiaceae. East Indies. 



Greshoff (32), quoting Dymock, says that the leaves are used 

 as an insecticide. 



