40 BULLETIN 1201, IT. S. DEPARTMENT OF AGRICULTURE. 



Inula viscosa (L.) Ait. Synonym: Erlgeron viscosus L. Mediterranean 

 region. 



Landerer (Ifi) reports that when this plant is used as a fumigant 

 in Greece, it does not narcotize the insects but drives them away, and 

 the same author (50) says that it is one of the most common plants 

 of Greece. The fumes of the burning plant have the same stupefy- 

 ing effect on mosquitoes as those of Caucasian insect powder. 



Passerini (66) found the flower heads inactive against flies. 



Iris florentina L. Iridaceae. Orris-root. 



Abbott (1, p. 7, 12) found orris root of no value against chicken 

 lice and the dog flea. 



Jatropha macrorhiza Benth. Etjphorbiaceae. Mexico and southwestern United 

 States. 



The writers' results are given on page 22. 



Juglans nigra L. Juglandaceae. Black walnut. Ontario and eastern United 

 States. 



Porcher (68, p. 362) says: "Walnut leaves soaked in water for 

 some hours, then boiled and applied to the skins of horses and other 

 animals, will prevent their being bitten or worried by flies." 



Riley (71, p. 186) reports that a decoction and an alcoholic extract 

 had no effect on cotton caterpillars, but the insects avoided the 

 sprayed leaves whenever possible. 



Montillot (62, p. 271) reports that a decoction from walnut leaves, 

 rubbed into the hair of domestic animals, protects these animals 

 from house flies. 



Andre (2, p. 84) reports that a decoction of walnut leaves poured 

 on the woolly aphis and in the soil about the roots of orchard trees 

 gives good results. 



Guenaux (35, p. 510) reports that the infusion from walnut leaves 

 is used to kill plant-lice and certain caterpillars. 



Juniperus sabina L. Pinaceae. Synonym : Sabina officinalis Garcke. Savin. 

 Old World. 



Greshoff (31, p. 161) reports that a decoction of the tops serves 

 as an insecticide. 



Juniperus virginiana L. Pinaceae. Redcedar. Eastern United States. 



Porcher (68, p. 589) says : " Cedar boxes are not infested by in- 

 sects, moths, etc., and are used for storing away woolens. The leaves 

 also prevent the attacks of insects when sprayed over cloth." 



Scott, Abbott, and Dudley (83, p. 28) say: "A red-cedar chest 

 readily killed all adult clothes moths and showed considerable kill- 

 ing effect upon 3 T oung larvae." 



Back and Rabak (9) assert that cedar chests exert no noticeable 

 effect upon the adult clothes moths, but they do kill the young larvse. 

 These writers indicate that the aroma from a volatile oil contained in 

 the wood is the insecticidal principle. 



Justicia adhatoda L. Acanthaceae. Synonym : Aclliatoda xmsica Nees. Mala- 

 bar-nut. India. 



Rusby (76) reports that it is fatal to flies, fleas, mosquitoes, and 

 the pupse of aquatic insects. 



