40 BULLETIN 1201, U. S. DEPARTMENT OF AGRICULTURE. 
Inula vistosa ( L. i Ait. Synonym: ErigefOn riscosus L. Mediterranean 
region. 
Landerer (49) 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. Ikidaceae. Orris-root. 
Abbott (1, p. 7, 12) found orris root of no value against chicken 
lice and the dog flea. 
Jatropha macrorhiza Benth. Ktthorbiaceae. 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 (,?, 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. 
Jnniperns 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. 
Jnniperns 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 young larva 1 ." 
Back and Kabak (9) assert that cedar chests exert no noticeable 
effect upon the adult clothes moths, but they do kill the young larvae. 
These writers indicate that the aroma from a volatile oil contained in 
the wood is the insecticidal principle. 
Justicia adhatoda L. Acanthaceae. Synonym : Adhatoda vasicaNees. Mala- 
bar-nut. India. 
Rushy ~(;v/) reports that it is fatal to flies, fleas, mosquitoes, and 
the pupae of aquatic insects. 
